My calculator's integration seems wrong

[gummz]

This is the integral: http://www.wolframalpha.com/input/?i=integrate+x^2+xy/2+from+0+to+x+with+respect+to+y

But my calculator (TI-nspire cx CAS) gets this:

x*(2x^2+xy)/2

Any idea why this is?

 

[fourier jr]

did you enter the right thing into your calculator with brackets in the right place, etc? I don't know how that y got left behind, you know your calculator better than I do.I got the same thing wolfram did.

 

[SammyS]

This is the integral: http://www.wolframalpha.com/input/?i=integrate+x^2+xy/2+from+0+to+x+with+respect+to+y

But my calculator (TI-nspire cx CAS) gets this:

x*(2x^2+xy)/2

Any idea why this is?

It looks like the integration done by your calculator used some integration variable other than x or y .

Please state in the body of your post the integral you are trying to evaluate.

 

[George Jones]

Did you put a multiplication symbol, "*", in the middle of "xy"?. It seems that your calculator treated "xy" as the name of a single constant. Thus, your calculator integrated the constant "xy" and got y*xy, After evaluating at the limits, this becomes x*xy.

 

[gummz]

That's it! Thank you so much George.