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## Class 11 Math (India) - Hindi

### Unit 8: Lesson 2

Derivation definition- Formal definition of the derivative as a limit (Hindi)
- Derivative as a limit numerical (Hindi)
- Derivative as a limit
- The derivative of x^2 at x = 3 using the formal definition (Hindi)
- The derivative of x^2 at any point (Hindi)
- Limit expression for the derivative of a linear function (Hindi)
- Limit expression for the derivative of cos x (Hindi)
- Limit expression for the derivative of function graphical (Hindi)
- Finding tangent line equations using the formal definition of a limit

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# Formal definition of the derivative as a limit (Hindi)

The derivative of function f at x=c is the limit of the slope of the secant line from x=c to x=c+h as h approaches 0. Symbolically, this is the limit of [f(c)-f(c+h)]/h as h→0.

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