integral in solve

04232015, 07:32 PM
Post: #1




integral in solve
I need a refresher for this solve question on Prime (asked in not quite HP for this problem on my WP 34S). I want to solve (integral x^2 from 0 to x)=10.
My CASIO 9860gii solve app is straight forward and quickly comes up with ~3.107. I know that this problem is easily accomplished on the Prime, but I can't remember how. 

04232015, 08:09 PM
Post: #2




RE: integral in solve
Something like:
solve((int(x^2,x,0,x)) = 10,x); // Exact checked in CAS settings or solve((∫(x^2,x,0,x)) = 10,x); Seems to work ok. 

04232015, 08:33 PM
Post: #3




RE: integral in solve
It does work, and is easy!
How can I do this on the solve app? 

04262015, 08:43 PM
Post: #4




RE: integral in solve
DrD...your example worked for the problem above, but doesn't work for solving (integral x^32*x^2+sqrt(13*x)dx from 0 to x)=10 (answer is ~2.61)
How do I do this in CAS, and are things different in home? 

04272015, 01:11 PM
Post: #5




RE: integral in solve
solve(int(x^32*x^2+sqrt(13*x),x,0,t)=10,t)
Perhaps you had a problem because you are using the same x for two different meanings. 

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