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{:(f(x),=(1-cos 3x)/(x tan x),",","for" ...

`{:(f(x),=(1-cos 3x)/(x tan x),",","for" x != 0),(,=k, ",","for" x = 0):}`
If f(x) is continuous at x = 0, the value of k is

A

`3/2`

B

`5/2`

C

`7/2`

D

`9/2`

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The correct Answer is:
D
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