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onegirl

  • 3 years ago

Use a pythagorean Trig. Identity to simplify the function, then take derivative of this function. f(x) = 4x^2 tan x

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  1. juanjohnguy
    • 3 years ago
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    We remember that tanx can be described as sinx over cos x

  2. onegirl
    • 3 years ago
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    ok?

  3. juanjohnguy
    • 3 years ago
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    I suppose that would simplify it a little bit if you dont know what the derivative of tanx is already but thats the only trig transformation I can see

  4. onegirl
    • 3 years ago
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    okay so how would i do this?

  5. juanjohnguy
    • 3 years ago
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    Well if you want to take the derivative of sinx over cosx then you would need to use the quotient rule

  6. onegirl
    • 3 years ago
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    ok

  7. onegirl
    • 3 years ago
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    i got sin(x))^2/(cos(x))^2 + 1

  8. onegirl
    • 3 years ago
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    @zepdrix can u help?

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