Strange Integration Problem

**Schermy** · August 23rd 2008, 07:26 PM

Hi, I'm doing a maths assignment and for part of I have to integrate a function that this segment is from.

$1/10x^2$

What is the procedure for doing that? Neither my textbook of tutoring sites have had examples that seem to be applicable for this function.

**Jhevon** · August 23rd 2008, 07:30 PM

Originally Posted by Schermy

Hi, I'm doing a maths assignment and for part of I have to integrate a function that this segment is from.

$1/10x^2$

What is the procedure for doing that? Neither my textbook of tutoring sites have had examples that seem to be applicable for this function.

please clarify, and use parentheses in the future.

do you mean $\frac 1{10}x^2$ or $\frac 1{10x^2}$ ?

the first case is trivial, just apply the power rule: $\int x^n~dx = \frac {x^{n + 1}}{n + 1} + C$ for $n \ne -1$

the second case is also trivial, if you rewrite it. write it as $\frac 1{10}x^{-2}$ and apply the power rule

**11rdc11** · August 23rd 2008, 07:33 PM

I'm kind of confused by your question? Do you want to integrate

? If so the answer is is -1/(10x). Oops jhevon beat me to it.

**Schermy** · August 23rd 2008, 07:33 PM

It was the former case and thanx very much for the answer, especially so promptly.

**Jhevon** · August 23rd 2008, 07:35 PM

Originally Posted by Schermy

It was the former case and thanx very much for the answer, especially so promptly.

so, what's your answer?

**Schermy** · August 23rd 2008, 07:41 PM

$\frac 1{10}x^3$ ???

**Jhevon** · August 23rd 2008, 07:44 PM

Originally Posted by Schermy

$\frac 1{10}x^3$ ???

nope

again, the rule is: $\int x^n~dx = \frac {x^{n + 1}}{{\color{red}n + 1}} + C$ for $n \ne -1$

**11rdc11** · August 23rd 2008, 07:46 PM

Try again it should be be $\frac{x^3}{30} + C$ do you see what you did wrong? oops I was to slow again.

**Jhevon** · August 23rd 2008, 07:50 PM

don't forget the + C guys

sorry for being so fast 11rdc11

**Schermy** · August 23rd 2008, 07:52 PM

$<br /> \frac{1}{10} \frac {x^{3}}{{3}} + C<br />$

P.S. Still learning the maths markup

**Jhevon** · August 23rd 2008, 07:58 PM

Originally Posted by Schermy

$<br /> \frac {x^3}{3} + C<br />$

don't forget the 1/10 that was there before

**11rdc11** · August 23rd 2008, 07:59 PM

Originally Posted by Jhevon

don't forget the + C guys

sorry for being so fast 11rdc11

Lol thank you for reminding me to include my constant

Thread: Strange Integration Problem

LinkBack

Thread Tools

Display

Strange Integration Problem

Similar Math Help Forum Discussions

A strange integration problem

Strange Problem has me stumped

strange log max&min problem

Strange Problem

Strange integration by substitution

Search Tags