Question

Using quotient rule, how do i set up j(x)= (3x + cosx)/ f(x) to find j'(x)?

Answer 1

\[(\frac{ u }{ v })\prime=\frac{ u \prime v-v \prime u }{ v^{2} }\]

Answer 2

where u and v are both functions of x

Answer 3

so what is u and v in your question?

Answer 4

j(x)= (3x + cosx) divided by f(x)
I'm not sure if I have to separate them, like j(x)= (3x/f(x)) + (cosx/f(x)) and use both product and quotient rule

Answer 5

nonono, just plug the function in to the equation

Answer 6

so your u is 3x + cos x and v is f(x)

Answer 7

is this right?
j'(x)= f(x)(3-sinx) - (3x+cosx)f'(x) divided by [f(x)]^2

Answer 8

well I think this is final answer

Answer 9

ok thanks!!