Thursday

October 2, 2014

October 2, 2014

Posted by **Sean** on Wednesday, February 13, 2008 at 10:17pm.

3dx/(10x^2-20x+20)

I've been stuck on this, and would like an answer ASAP.

- Calculus -
**Mischa**, Wednesday, February 13, 2008 at 10:32pmtry factoring the bottom and using the triangle rule

- Calculus -
**Sean**, Wednesday, February 13, 2008 at 10:34pmThere's my problem. I just can't factor the bottom.

- Calculus -
**Mischa**, Wednesday, February 13, 2008 at 10:38pmActually, it's arctan.

3/10*integral(1/((x-1)^2+1))dx

=3/10arctan(x-1) + C

- Calculus -
- Calculus -
**Sean**, Wednesday, February 13, 2008 at 10:45pmOh. Okay thanks.

Thank you so much. If it's not to much...

How would I integrate

(4dt)/(sqrt(15-2t-t^2))

That thing has me stumped.

- Calculus -
**Mischa**, Wednesday, February 13, 2008 at 11:36pmthat one's arcsin.

factor it into:

4*integral(1/sqrt(16-(t^2+2t+1)))dt

so,

4*integral(1/sqrt(4^2+(t+1)^2))dt

divide everything in the sqrt by 4^2 and bring it out as 1/4,

4/4*integral(1/sqrt(1+((t+1)/4)^s))dt)

now it's in arcsin form (remember u and du)

so your answer is:

4*arcsin((t+1)/4) + C

- Calculus -

**Answer this Question**

**Related Questions**

Calculus - I have two questions, because I'm preparing for a math test on monday...

Calculus - I don't know if I did these problems correctly. Can you check them? ...

Calculus - Find dy/dx of the function 10x^2+4y^2=sqrt(7). Is the answer 20x+8y=0...

Calculus - Find the derivative of 10x^2+4y^2=sqrt(7). Is the answer 20x+8y=0

calculus - f(x) = 6x^2 -8x +3 how would I find the most general antiderivative ...

Calculus. Please help! - Find the minimum value of the function f(x,y= 25x^2+3y^...

Calculus - I'm doing statistics homework and am stuck on a problem using ...

math,factoring,help - Can someone please show me step by step how to do these. I...

Calculus - F(x) = cos(x) • the integral from 2 to x² + 1 of e^(u² +5)du Find F'(...

Calculus - Find the exact area of the region enclosed by the square root of (x...