Question

if y=3-u\2+u and u=4x\1-x2; find dy\dx.

Answer 1

can you draw it?

Answer 2

no

Answer 3

why not?

Answer 4

okay first
2+u-3-u/(2+u)^2

Answer 5

wrong

Answer 6

oh..he knows the answer..fascinating

Answer 7

answer can not match

Answer 8

okay we use a differential

Answer 9

it's right

Answer 10

we now sub u by x
2+u-3-u/(2+u)^2
4x/1-x^2 =u
-1=(2+(2+u)^2)

Answer 11

no its wrong

Answer 12

now we devertive this
-1=(2+(2+u)^2)
0=3+(u^2+2u+4)
-7=u^2+2u

Answer 13

wrong