Question

derivative of 5x sin(2x)

Answer 1

@Mertsj

Answer 2

chain rule+product rule :D

Answer 3

could you solve this one since it has trig functions plzz

Answer 4

for product rule, f=5x and g=sin(2x)

Answer 5

for chain rule, y=sin(2x) and u=2x

Answer 6

hence what is the derivative?

Answer 7

\[\frac d{dx}\sin(2x)=\cos(2x)\cdot\frac d{dx}2x=2\cos(2x)\]

Answer 8

are you sure?

Answer 9

you forgot about 5x

Answer 10

i'm just doing the part with trigonometric function

Answer 11

you have to apply the product rule yourself xP

Answer 12

k

Answer 13

b/c this website ain't a homework-doing website xP

Answer 14

lol

Answer 15

think of anything?

Answer 16

yah 5(2)cos(2x)

Answer 17

do you recall the product rule? what's the product rule? :)

Answer 18

idk

Answer 19

hey can u help me with another question plz? just tell me which one lol, I dont know hwo to answer it

Answer 20

The graph of y = x6 + 4.5x5 − 10x4 + 5x − 10 is concave upward for all values of x such that:
(Points : 4)
0 < x < 4
−4 < x < 1
all real x
x < −4 or x > 1
x < 0 or x > 4

Answer 21

\[\frac d{dx}f(x)g(x)=f'(x)g(x)+g'(x)f(x)\]

Answer 22

and you werent correct

Answer 23

The graph of y = x6 + 4.5x5 − 10x4 + 5x − 10 is concave upward for all values of x such that:
(Points : 4)
0 < x < 4
−4 < x < 1
all real x
x < −4 or x > 1
x < 0 or x > 4

Answer 24

could u help me plz

Answer 25

\[\frac d{dx} 5x\sin(2x)=5\sin(2x)+10x\cos(2x)\]

Answer 26

thnxs

Answer 27

https://www.desmos.com/calculator/u1aavwzeqz

Answer 28

...

Answer 29

is it c?

Answer 30

all real x?

Answer 31

lemme fink

Answer 32

find the second derivative of that function, if the second derivative is positive within that interval, it's concave up.

Answer 33

could you do it for me plzz

Answer 34

no http://openstudy.com/code-of-conduct

Answer 35

Find its second derivative first

Answer 36

5x Sin (2x).... 10xCos(2x)+5Sin(2x)