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# Find the derivative of $\frac{\left(x^5+3x\right)^4}{\cos\left(x\right)}$ using the definition

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Find the derivativeFind derivdef(((x^5+3x)^4)/cosx) using the product ruleFind derivdef(((x^5+3x)^4)/cosx) using the quotient ruleFind derivdef(((x^5+3x)^4)/cosx) using logarithmic differentiation

### Main Topic: Definition of Derivative

Resolution of derivatives using the definition of the derivative, which is the limit of difference quotients of real numbers.