²/_1+x²

^2x/_1+x²

 -²/_1+x²

None of these

all x R

all x  R-{0}

all x  R-Ι

all x  I

1

3

2

6

4xy = x⁴ + c

xy = x⁴ + c

4xy + x⁴ - c 

None of these

f is continuous every where

f is continuous at x = a

f has a limit 1 at x = a

Limit of f does not exist at x = a

y sin ² x = x³ + c

y sin x = x² + c

y sin x = x² + c

y cos x = x³ + c

0

1

a+b+c

None of these

2sec 2x

2 cosec 2 x

2 sec³x

2 cosec³x

not defined for all real x

continuous at x = 0

not differentiable for all x

Such that ^dy/_dx = 1/3 for y

15

-15

0

6