If for `f(x)=lamdax^2+mux+12` and `f'(4)=15` and `f'(2)=11`, then find `lamda` and `mu`

Explanation

Given,`f(x)=lambdax^2+mux+12`

`f'(x)=2lambdax+mu`,

`f'(4)=15`

`=>(4)+mu=15`

`8lambda+mu=15 ........ (1)`

`f'(2)=11`

`=>2lambda(2)+mu=11`

`4lambda+mu=11 ........ (2)`

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