how to write this formula in wolfram alpha

Questions
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1

hi, can anyone help me writing this in wolframalpha?

kijk.png

Many thanks

2

I assume that you want to subtract the value at -1 from the value at 1.

Well, the function is an even function so the answer is zero.

This looks like you actually are doing a calculus problem to integrate this function from -1 to 1:

x/3 + (x^3)/2

And, again, since you are integrating an odd function you will immediately answer that the result is zero.

But if you want to use Wolfram|Alpha (rather than thinking the problem through first!) the instruction might be

integrate x/3 + (x^3)/2 from  -1 to 1
3

thank you David Reiss :slight_smile: