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Find the derivative of f(x)=5x at x=2....

Find the derivative of f(x)=5x at x=2.

Text Solution

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f(x)=5x
`therefore f'(2)=underset(hrarr0)"lim"(f(2+h)-f(2))/(h)`
`=underset(hrarr 0) (5(2+h)-5(2))/(h)`
`=underset(hrarr0) "lim"(5h)/(h)`
`= underset(hrarr0)"lim"5=5`.
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NAGEEN PRAKASHAN-LIMITS AND DERIVATIVES-Miscellaneous Exercise
  1. Find the derivative of f(x)=5x at x=2.

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