Question

Calc problems. Could someone check out my answers ? :/

Answer 1

one of them, with the answer (1/5)arcsin... is correct.

Answer 2

yay! ok i had a feeling that one was good. :) not sure about the others!

Answer 3

the 1/2 arctan e^x/2+ c
is also correct!!

Answer 4

yes! :)

Answer 5

how did you solve the last remaining one ?

Answer 6

i think you messed that up...

Answer 7

Thats the one i was having trouble with the most :/

Answer 8

i went off this formula..

Answer 9

Why don't you plug your problem in wolframalpha.com and verify your answers?

Answer 10

ok, so what you took as "a"

see this,

\(\Large 3x^2 -2 = 3 ( x^2 - 2/3) \)

comparing x^2 - 2/3 with x^2 -a^2
what would your "a" be ?

Answer 11

Would that be 2/3?

Answer 12

a^2 = 2/3
a=..

Answer 13

4/9!

Answer 14

oh wait..

Answer 15

well wouldn't a be RAD (2/3)?

Answer 16

\(a^2 = 2/3 \\ a = \sqrt {2/3}\)

Answer 17

so, your integral now