calculus

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y = (sin x) / (1 + tan x)

  • calculus -

    Is there a question here?

  • calculus -

    Sorry
    y'=

  • calculus -

    just use the quotient rule. If
    y = u/v
    y' = (vu'-uv')/v^2

    y' = [(1+tanx)(cosx) - (sinx)(sec^2 x)]/(1+tanx)^2
    = ((cosx - (sinx)(tan^2 x))/(1+tanx)^2

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