Question

f(x) = 19xe^(1 − x^2)

Answer 1

what do you need to do...?

Answer 2

Find the exact location of all the relative and absolute extrema of the function.

Answer 3

well perhaps you should graph it 1st

here is a sight I use

https://www.desmos.com/calculator

then you can see them...

makes the calculus a little easier

Answer 4

i did that and i typed in what i got and it came out wrong>.<

Answer 5

type in

y = 19xe^(1 - x^2)

and it should work

Answer 6

the graphing works! but the point are wrong when i put them as my answer!

Answer 7

is there a domain in your question..?

Answer 8

nope

Answer 9

f(x) = x4 − 8x3 with domain [−1, +∞)
do you know how to do this one?

Answer 10

f(x)=x^4 - 8x^3 domain -1,+infinity

Answer 11

f(x) = x^4 - 8x^3
f'(x) = 4x^3 - 24x^2 = 4x^2(x - 6) = 0
x = 0, x = 6 are critical points.
f''(x) = 12x^2 - 48x
f''(0) = 0 (therefore x = 0 is not a local maxima / minima_
f''(6) = 12*36 - 48*6 = 144. f''(6) > 0, therefore x = 6 is a local minima.

Answer 12

so what is the y?

Answer 13

im so lost and my homework is due at 10 am:/

Answer 14

at x = 6, f(6) = 6^4 - 8*6^3 = -432.

Answer 15

So when x = 6, the corresponding y value is -432.

Answer 16

so its telling me that its wrong>.<

Answer 17

wait just kidding it took it!

Answer 18

f(x) = x ln x with domain (0, +∞) do you know how to do this one by chance?

Answer 19

domain (0,+infinity)