1.

Q.4 Find the value of limx → 0⁡(Sin(2x))Tan2 (2x)? *a) e0.5b) e-0.5c) e-1d) e​

Answer»

Answer:

lim

x→0

x

3

tan2x−SIN2X

=lim

x→0

x

3

cos2x

sin2x

−sin2x

=lim

x→0

sin2x

x

3

cos2x

1

−1

=lim

x→0

x

3

sin2x

(

cos2x

1−cos2x

)

=lim

x→0

x

3

sin2x

(

cos2x

2SIN

2

x

)

=lim

x→0

2

1

×2x

sin2x

×

x

2

2sin

2

x

×

cos2x

1

using multiple angle formula cos2x=1−2sin

2

x

=lim

x→0

2(

2x

sin2x

)×2

x

2

sin

2

x

×

cos2x

1

by rearranging the terms

=2×1×2×1×

cos0

1

since lim

θ→0

θ

sinθ

=1

=4 since cos0=1



Discussion

No Comment Found

Related InterviewSolutions