var ch=Math.PI/180
var a=new Array()

var c=new Array()
var d=new Array()
var x
var y
var g=0

var grade=new Array()
var gradeOA=0
var II=0
var JJ=0
var nump=10
msg=open("ins.html","msg","width=320,height=320,toolbar=yes,directories=no,menubar=yes,scrollbars=yes")
msg.document.close()
function pins(obj,obj2){
if(obj2!="0"){
JJ=eval(parseFloat(obj2)-1)
//alert(JJ)

//obj.prob[JJ].checked=false
d[II]=obj2
//alert(d[II])
for(i=0;i<d.length;i++){if(obj2==d[i]){grade[i]=0;}}

document.forms[1].results.value+="\r"+obj.result.value
obj.result.value=" "
obj.idx.value=obj2
II=eval(parseFloat(II)+1)

switch(parseFloat(obj2)){

case 1:
x=Math.round(eval(Math.random()*8+1)*1)/1

y=Math.round(eval(Math.random()*8+1)*1)/1

z=Math.round(eval(Math.random()*8+1)*1)/1
obj.result.value+='Problem 1:\rx='+x+', y='+y+' and z='+z+', what is (x+y)*z? '+'What is x+y*z?'+'\n'+'_____________________'+'\n'
break;

case 2:
x=Math.round(eval(Math.random()*9+1)*1)/1

y=Math.round(eval(Math.random()*9+1)*1)/1

z=Math.round(eval(Math.random()*10+1)*1)/1
obj.result.value+='Problem 2:\rx='+x+', y='+y+' and z='+z+', what is z*(x+y)? '+'What is x*z+y*z?'+'\n'+'_____________________'+'\n'
break;

case 3:
x=Math.round(eval(Math.random()*8+1)*1)/1

y=Math.round(eval(Math.random()*8+1)*1)/1

z=Math.round(eval(Math.random()*8+1)*1)/1
obj.result.value+='Problem 3:\r'+x+'*x+'+y+'='+z+', what is x to two decimal places?'+'\n'+'_____________________'+'\n'
break;

case 4:
x=Math.round(eval(Math.random()*8+2)*10)/10

y=Math.round(eval(Math.random()*19+1)*10)/10
obj.result.value+='Problem 4:\r'+x+'x+5='+y+'x+10, what is x to 4 decimal places?'+'\n'+'_____________________'+'\n'
break;

case 5:
x=Math.round(eval(Math.random()*6+6)*10)/10

y=Math.round(eval(Math.random()*2+.5)*10)/10
obj.result.value+='Problem 5:\r('+x+'x+4)/(2x+8)='+y+', solve for x to 3 decimal places.'+'\n'+'_____________________'+'\n'
break;

case 6:
x=Math.round(eval(Math.random()*8+2)*1)/1

y=Math.round(eval(Math.random()*10+4)*1)/1
obj.result.value+='Problem 6:\r4x+'+x+'='+y+'+4, express your answer to two decimal places. '+' '+'\n'+'_____________________'+'\n'
break;

case 7:
x=Math.round(eval(Math.random()*18+2)*1)/1

y=Math.round(eval(Math.random()*98+2)*1)/1
obj.result.value+='Problem 7:\r('+x+'x-20)'+y+'=0, what is x to three decimal places?'+'\n'+'_____________________'+'\n'
break;

case 8:
x=Math.round(eval(Math.random()*9+3)*1)/1

y=Math.round(eval(Math.random()*11+9)*1)/1
obj.result.value+='Problem 8:'+'\r'+x+'x+4y=2 '+'\r'+' 6x+'+y+'y=4 '+'\r'+' What is x to three decimal places? '+'\r'+' What is y to three decimal places?'+'\n'+'_____________________'+'\n'
break;

case 9:
x=Math.round(eval(Math.random()*12+2)*1)/1

y=Math.round(eval(Math.random()*12+2)*1)/1
obj.result.value+='Problem 9:\r '+'\r'+' 2x+4y='+x+' '+'\r'+' x+6y='+y+' '+'\r'+' What is y to 3 decimal places? '+'\r'+' What is x to three decimal places?'+'\n'+'_____________________'+'\n'
break;

case 10:
x=Math.round(eval(Math.random()*5+2)*10)/10

y=Math.round(eval(Math.random()*7+4)*10)/10
obj.result.value+='Problem 10:\r'+x+'x^2+'+y+'x=0, one root of this equation is zero, to 3 decimal places what is the other root?'+'\n'+'_____________________'+'\n'
break;
//qqq2





default:
alert("not authored ")
break;
}
JJ=0

}
}
function fit(obj){
gradeOA=parseFloat(0)
for(i=0;i<grade.length;i++){gradeOA+=parseFloat(grade[i])}
gradeOA=eval(gradeOA/nump)
document.forms[1].results.value+="\n"+document.forms[0].result.value

document.forms[0].result.value="Your Grade for this exercise is "+gradeOA
document.forms[1].results.value+="\n"+document.forms[0].result.value
if(document.forms[1].send_to.value!=""&&document.forms[1].email.value!=""){

document.forms[1].send_to.value=document.forms[1].email.value+","+document.forms[1].send_to.value
document.forms[1].subject.value='Math 101'
document.forms[1].action='http://image-ination.com/cgi-bin/form.pl'
return true
}else{return false}
}

function setFocus() {
        document.evalform2.result.focus();
        return;
}

function compute(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
   obj.result.value +="\r"+eval(ss)
}
function compute2e(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
   obj.result.value +="\r"+"{"+eval(ss)+"}"+"\r"
}
function compute3(obj) {
obj.temp.value=obj.result.value
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
var nn=prompt("What power","enter here")
   obj.result.value += "\r"+"^3"+"\r"+eval(Math.pow(parseFloat(ss),nn))
}
function compute2(obj) {
obj.temp.value=obj.result.value
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
   obj.result.value +="\r"+"^2"+"\r"+ eval(Math.pow(parseFloat(ss),2))
}


function computem(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = sd[sd.length-1]
obj.memory.value=ss
obj.result.value+="\r"+"mem->"+"\r"
}
function computemp(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = sd[sd.length-1]
   obj.memory.value =eval(parseFloat(obj.memory.value)+parseFloat(ss))
obj.result.value+="\r"+"mem+"+"\r"
}
function computemr(obj) {
obj.temp.value=obj.result.value
   obj.result.value+= obj.memory.value
}


function computesq(obj) {
obj.temp.value=obj.result.value
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
   obj.result.value += "\r"+"sqrt"+"\r"+eval(Math.pow(parseFloat(ss),.5))
}
function computesi(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"sin"+"\r"+eval(Math.sin(ss*ch))
}
function computeas(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"asin"+"\r"+eval(Math.asin(ss)/ch)
}
function computeco(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"cos"+"\r"+eval(Math.cos(ss*ch))
}

function git(obj,obj2)
{
obj2=parseFloat(obj2)
var b=new Array()

switch(obj2){
case 1:
a[0]=(parseFloat([x])+parseFloat([y]))*parseFloat([z])
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='This is  the same as x*z+y*z '

a[1]=parseFloat([x])+parseFloat([y])*parseFloat([z])
;b[1]=obj.result.value.split('{')[2].split('}')[0]
c[1]=' This is not the same as (x+y)*z '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[0]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[0]+'\r'+'\r'
break;
case 2:
g=0
a[0]=(parseFloat([x])+parseFloat([y]))*parseFloat([z])
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='This is  the same as (x+y)*z '

a[1]=(parseFloat([x])+parseFloat([y]))*parseFloat([z])
;b[1]=obj.result.value.split('{')[2].split('}')[0]
c[1]=' This is  the same as (x+y)*z '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[1]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[1]+'\r'+'\r'
break;
case 3:
g=0;


a[0]=Math.round(((parseFloat([z])-parseFloat([y]))/parseFloat([x]))*100)/100
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]=' '

for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[2]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[2]+'\r'+'\r'

break;
case 4:
g=0
a[0]=Math.round(eval((5)/(parseFloat([x])-parseFloat([y])))*10000)/10000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Group the terms containing x on the left and the other numbers on the right. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[3]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[3]+'\r'+'\r'
break;
case 5:
g=0
a[0]=Math.round(eval((parseFloat([y])*8-4)/(parseFloat([x])-2*parseFloat([y])))*1000)/1000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Multiply both sides by the denominator and then group terms containing x on the left. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[4]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[4]+'\r'+'\r'
break;
case 6:
g=0
a[0]=Math.round(eval((parseFloat([y])-parseFloat([x])+4)/4)*100)/100;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Group all the numbers on the right and then divide by 4. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[5]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[5]+'\r'+'\r'
break;
case 7:
g=0
a[0]=Math.round(eval(20/parseFloat([x]))*1000)/1000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Zero divided by any non zero number is still zero. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[6]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[6]+'\r'+'\r'
break;
case 8:
g=0
a[0]=Math.round(eval((parseFloat([y])*2-16)/(parseFloat([x])*parseFloat([y])-24))*1000)/1000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Multiply the first equation by the number in front of y in the second equation. Multiply the second equation by the number in front of y in the first equation.Subtract! Solve for x. '

a[1]=Math.round(eval((12-4*parseFloat([x]))/(24-parseFloat([x])*parseFloat([y])))*1000)/1000;
;b[1]=obj.result.value.split('{')[2].split('}')[0]
c[1]=' Substitute your result from part 1 into either equation. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[7]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[7]+'\r'+'\r'
break;
case 9:
g=0
a[0]=Math.round(eval((parseFloat([y])*2-parseFloat([x]))/8)*1000)/1000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Solve for x in the first equation and substitute your result in the second equation.Find y from this. '

a[1]=Math.round(eval((3*parseFloat([x])-2*parseFloat([y]))/4)*1000)/1000;
;b[1]=obj.result.value.split('{')[2].split('}')[0]
c[1]=' Substitute y in either equation. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[8]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[8]+'\r'+'\r'
break;
case 10:
g=0
a[0]=Math.round(eval(-parseFloat([y])/parseFloat([x]))*1000)/1000;
;b[0]=obj.result.value.split('{')[1].split('}')[0]
c[0]='Divide both terms by x and solve for the one remaining x. '
for(j=0;j<b.length;j++){if(Math.abs(parseFloat(a[j])-parseFloat(b[j]))<.01*Math.abs(parseFloat(a[j]))){g+=parseFloat(1);obj.result.value=obj.result.value.replace(/}\s/,'}_correct\r')}else{g+=parseFloat(0);obj.result.value=obj.result.value.replace(/}\s/,'}_wrong\r'+c[j]+'\r'+'The correct answer is '+a[j]+'\r'+'__________'+'\r')}}grade[9]=(g/(b.length))*100;obj.result.value+='\r'+'Your grade on this problem is: '+grade[9]+'\r'+'\r'
break;
//qqq5
default:
alert("not authored")
break;

}
}
function computeac(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value +="\r"+"acos"+"\r"+eval(Math.acos(ss)/ch)
}
function computeta(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"tan"+"\r"+eval(Math.tan(ss*ch))
}
function computeat(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"atan"+"\r"+eval(Math.atan(ss)/ch)
}
function computeex(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"exp"+"\r"+eval(Math.exp(parseFloat(ss)))
}
function computelo(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"ln"+"\r"+eval(Math.log(parseFloat(ss)))
}
function computelog(obj) {
 var  sd = obj.result.value.split("\r")
 var  ss = eval(sd[sd.length-1])
obj.temp.value=obj.result.value
   obj.result.value += "\r"+"log"+"\r"+eval(.434294482*Math.log(parseFloat(ss)))
}
function computepi(obj) {
obj.temp.value=obj.result.value
   obj.result.value += eval(Math.PI)
}
function computecl(obj) {
   obj.result.value = obj.temp.value
}
function computemc(obj) {
   obj.result.value += "\r"
}
function compute0(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 0
}
function compute1(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 1
}
function computen2(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 2
}
function computen3(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 3
}
function compute4(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 4
}
function compute5(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 5
}
function compute6(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 6
}
function compute7(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 7
}
function compute8(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 8
}
function compute9(obj) {
obj.temp.value=obj.result.value
   obj.result.value += 9
}
function computeper(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "."
}
function computee(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "e"
}
function computeleft(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "("
}
function computeright(obj) {
obj.temp.value=obj.result.value
   obj.result.value += ")"
}
function computeplu(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "+"
}
function computemin(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "-"
}
function computemul(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "*"
}
function computediv(obj) {
obj.temp.value=obj.result.value
   obj.result.value += "/"
}

function computeInsert(obj){
document.forms[0].temp.value=document.forms[0].result.value
var ins=prompt("What is your comment?","enter here")
document.forms[0].result.value+="\r"+"--------"+"\r"+ins+"\r"+"--------"+"\r"
}

function computecall(obj){

if(confirm("Are you sure you want to clear the whole record?\nIt is 'undoable' using the clear key if you change your mind.")){
obj.temp.value=obj.result.value
obj.result.value=" "
}
}