Question

2.
If y=sec( tan r), then find
dy
dx​

Answer 1

Answer:

=sec(tan

−1

x)

dx

dy

=sec(tan

−1

x)tan(tan

−1

x)⋅

1+x

2

1

dx

dy

∣

x=1

=

2

×1×

2

1

=

2

1