Question

e^-x sinx
0 13 years ago

Answer 1

\[y = e^{-x} \sin x \] right? if so...I got\[\frac{dy}{dx} = \frac{\cos x - \sin x}{e^x}\]

Answer 2

sometimes I use the chain rule incorrectly, this is one of those times

ok so now what?

Answer 3

find the critical points by setting y' = 0 and solving for x

Answer 4

how come the derivative of sin(x) is not equal to cos(x)?

Answer 5

so
cosx - sinx = 0 ?

Answer 6

it is! in this problem you must use the product rule

Answer 7

cos x = sin x
what value of x makes the statement true?

Answer 8

ahhh ok product rule

um -1 ?

Answer 9

Pi/4! cos pi/4 = sin pi/4

Answer 10

how do you get Pi/4?

Answer 11

ahhhhh

Answer 12

=D