Wednesday

January 28, 2015

January 28, 2015

Posted by **anon** on Saturday, March 12, 2011 at 7:09pm.

A.1/6 x^2 sin 3x + C

B.1/3 x sin 3x -1/2 sin 3x +C

C.1/3 x sin 3x +1/9 cos 3x +C << my choice.

D. 1/2 x^2 +1/18 sin^2 3x +C

2.evaluate (integral sign)xe(power of 2x)dx

A.1/6 x^2 e(to the power of 3x)+C

B.1/2 xe(to the power of 2x)-1/2 e(to

the power of 2x)+C

C.1/2xe(to the power of 2x) -1/4 e(to the power of 2x) +C

D.1/2 x^2 -1/8 e(to the power of 4x +C

I don't know the answer to this one.

- Calculus -
**MathMate**, Saturday, March 12, 2011 at 7:30pm1. C is Correct

Integration by parts,

∫xcos(3x)dx

=(1/3)xsin(3x)-(1/3)∫cos(3x)dx

= ....

2. Same as 1. Use integration by parts

∫xe^{2x}dx

=(1/2)xe^{2x}-(1/2)∫e^{2x}dx

=...

- Calculus -
**Anon**, Sunday, March 13, 2011 at 5:30amC ?

- Calculus -
**MathMate**, Sunday, March 13, 2011 at 9:50amPerfect!

**Answer this Question**

**Related Questions**

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

tigonometry - expres the following as sums and differences of sines or cosines ...

Calculus - Evaluate the integral. S= integral sign I= absolute value S ((cos x...

Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

algebra - Can someone please help me do this problem? That would be great! ...

Integral - That's the same as the integral of sin^2 x dx. Use integration by ...

Math - Calculus - The identity below is significant because it relates 3 ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...