`sin 4x`

Text Solution

Verified by Experts

The correct Answer is:
`4 cos 4x`
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Knowledge Check

  • The range of y=(sin4x-sin2x)/(sin4x+sin2x) satisfies

    A
    `y in (-oo, (1)/(3))`
    B
    `y in ((1)/(3),1)`
    C
    `y in (1, 3)`
    D
    `y in (3, oo)`
  • The value of lim_(xto)(sin4x-sin4x.cosx)/(x^(3)) is

    A
    1
    B
    2
    C
    4
    D
    8
  • What is the value of {(sin4x+sin4y)tan(2x-2y)}/(sin4x-sin4y)?

    A
    `tan 2 (2x + 2y) `
    B
    `tan(2)`
    C
    `cot(x - y)`
    D
    `tan (2x + 2y)`
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