Question

x=4 differentiate both sides w.r.t "x" !

Answer 1

a constant differentiated is always zero (by itself)

Answer 2

1=0

Answer 3

dx/dx = 1
d(4)/dx= 0

Answer 4

(x)' = (4)'
x' = 0

Answer 5

x' = 1 w.r.t to x

Answer 6

why don't you just write out "with respect to x"
it's not a widely known abbreviation

Answer 7

the same rule applies

Answer 8

a constant differentiated is always zero (by itself)

Answer 9

Seems like a false statement