Question

Y
is equal to 1 - X upon 1 + X find DY by DX​

Answer 1

use chain rule..or division rule

dy/dx=((1+x)(-1)-(1-x)))/(1+x)²

Answer 2

Answer:

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-2/(1+x)^2

Step-by-step explanation:

y=1-x/1+x

dy/dx=(1+x)d/dx(1-x) - d/dx(1+x)/(1+x)^2.....division rule

dy/dx=(1+x)(-1)-(1)(1-x)/(1+x)^2

dy/dx= -1-x-1+x/(1+x)^2

dy/dx= -2/(1+x)^2