1.

If If y= tan x then at x = 0, y2 is equal to:(A) −1 (B) 1 (C) 0 (D) 1/2​

Answer»

ong>Answer:

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



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