Question

y=tan(2x-x^3) u=2x-x^3
find the derivative

Answer 1

AM I RIGHT

Answer 2

use www.wolframalpha.com to check yourself

Answer 3

d/dx (2x-x^3) =?

Answer 4

2-3x^2

Answer 5

yes

Answer 6

so whats your answer now ?

Answer 7

but we need to use the chain rule right so 2-3x^2=0-6x again chain rule so 6

Answer 8

i mean -6

Answer 9

u do d/dx(2x-x^3) only once, right ?
its just a function of x, not a function of function of x
so, no chain rule there

Answer 10

what do u mean by function of function of x

Answer 11

like sin(x^2) is function of function of x
sin x is just function., x^2 is just function
chain rule applies to function of function of x

Answer 12

ohk now i get it thx for ur patience and help

Answer 13

ok, so the answer here u get is ?

Answer 14

sec^2(2x-x^3))(2-3x^2)

Answer 15

correct :)