Question

help please!!:)

Answer 1

everything is correct

except that e^0 =1
so your answer becomes
0+4 =4

Answer 2

check out last step again

Answer 3

thanks guys! so the answer is 4 yeah? weird that my book says the answer is 0.1482 ... sigh my book is always wrong these days

Answer 4

how about this one?

Answer 5

\((3x)^2 = 3^2 x^2 = 9x^2 \)

Answer 6

did i have to simplify it to that before i did anything else?

Answer 7

you wrote
(3x)^2 as 3x^2
thats incorrect
write it as
9x^2

also
derivative of inverse cos function is negative