Use the definition of derivative to find the derivative of tan(x)

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SUMMARY

The derivative of tan(x) can be derived using the definition of the derivative, specifically the formula (f(x+h) - f(x))/h. The discussion emphasizes the importance of applying this definition rather than relying solely on the quotient rule, which is applicable since tan(x) can be expressed as sin(x)/cos(x). Additionally, utilizing the tangent addition formula, tan(a+b), may facilitate the derivation process.

PREREQUISITES
  • Understanding of the definition of derivative
  • Familiarity with trigonometric functions, specifically sin(x) and cos(x)
  • Knowledge of the quotient rule in calculus
  • Basic grasp of trigonometric identities, including tan(a+b)
NEXT STEPS
  • Practice deriving derivatives using the definition of derivative for various functions
  • Study the properties and applications of the tangent addition formula, tan(a+b)
  • Explore advanced calculus techniques, including limits and continuity
  • Review the quotient rule and its applications in differentiation
USEFUL FOR

Students studying calculus, particularly those focusing on differentiation techniques and trigonometric functions.

Willian93
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Homework Statement


use the definition of derivative to find the derivative of tan(x)


Homework Equations



Tan(x)= sinx/cosx

The Attempt at a Solution



i used sinx/cosx, and then use quotient rule, not sure if it is call "definition of derivative"so, is there anyway i can use f(x+h)-f(x)/h to find the derivative of tan (x)?
 
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The question does want you to use (f(x+h)-f(x))/h, which is the definition of the derivative. That's the relevant equation. It might also be handy to have an equation for tan(a+b).

Cheers -- sylas
 

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