Question

Evaluate the Indefinite Integral 2u(u^2+1)^2 du

Answer 1

D(u^2 +1 ) = 2u

Answer 2

Try using substitution and let x = u^2 + 1

Answer 3

lol.......trig sub ;)

Answer 4

not so much trig sub but regular substitution

Answer 5

x = u^2 + 1
dx = 2u du
\[\int\limits_{}^{}x^2dx = \frac{1}{3}x^3 = \frac{1}{3}(u^2 + 1)^3\]

Answer 6

...trig sub!!... its all I can do ;)

Answer 7

amistre loves his trig subs

Answer 8

trig sub tis; trig sub that; but the trig sub tshirt and ride the rides.....trig sub!!!!

Answer 9

ROFLLL!!

Answer 10

chiaroscuro - was that your final answer?
It's actually a multiple choice question and I can't seem to figure out if I got the right answer or if it's "none of the above"

Answer 11

1/3 (u^2 + 1)^3