Question

Find second derivative of the function
r={1+4theta / 4theta} (4-theta)

Answer 1

\[r = \frac{1 + 4\theta}{4\theta} \times(4-\theta)\] ?

Answer 2

yes, how to do second derivative please

Answer 3

sure, you just take the derivative, then take it again on the derivative. you know how to thake the derivative of this fucntion r?

Answer 4

No, I'm confused when it's quotient function, can you help

Answer 5

sure, the easiest thing to do here would be to multiply by the 4 - theta first

Answer 6

do that and type what you get in the equation editor

Answer 7

simplify it as much as possible

Answer 8

can you show it here so I can see?

Answer 9

\[\frac{d}{dx}( \frac{g(x)}{f(x)}) = \frac{g(x)'f(x) - f(x)g(x)'}{f(x)^2}\]

Answer 10

so what is g(x) for you?

Answer 11

1+4theta rigt?

Answer 12

no, simplify the equation first

Answer 13

multiply 1 +4theta by (4 - theta)

Answer 14

then you will just have r = somthing/something

Answer 15

differentiate using the rule i gave you up there^

Answer 16

oh ic, much better

Answer 17

another question??

Answer 18

go on

Answer 19

give me few minutes as I'm trying to solve for this problem, thanks

Answer 20

well im going to go now. Good luck!

Answer 21

thanks for your help