Question

y=tanx prove that y2=2yy1​

Answer 1

Step-by-step explanation:

y=tanx

∴

dx

dy

=y

1

=sec

2

x

dx

d

(y

1

)=y

2

=2secx

dx

d

(secx)

y

2

=2sec

2

xtanx

y

2

=2yy

1