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The value of lim(xto0) ((1-cos2x)sin5x)/...

The value of `lim_(xto0) ((1-cos2x)sin5x)/(x^(2)sin3x)` is

A

`(10)/(3)`

B

`(3)/(10)`

C

`(6)/(5)`

D

`(5)/(6)`

Text Solution

Verified by Experts

The correct Answer is:
A

`underset(xto0)lim((1-cos2x)sin5x)/(x^(2)sin3x)`
`=underset(xto0)lim(2sin^(2)x sin5x)/(x^(2)sin3x)`
`=underset(xto0)lim((2sin^(2)x)/(x^(2)))(((sin5x)/(x)))/(((sin3x)/(x)))`
`=underset(xto0)lim""^(2)((sinx)/(x))^(2)xx(5underset(xto0)lim((sin5x)/(5x)))/(3underset(xto0)lim((sin3x)/(3x)))`
`=(2xx5)/(3)=(10)/(3)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 14-Paper 2 (Mathematics)
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