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Question Number 89188 by naka3546 last updated on 16/Apr/20

$$f\left(x\right)+f(x-1)=x^2,x\in \mathbb{R}$$$$f\left(19\right)=94$$$$f\left(94\right)=...?$$

Answered by jagoll last updated on 16/Apr/20

$$igotf\left(x\right)=\frac{1}{2}x(x+1)$$$$butf\left(19\right)\ne 94$$$$why?$$

Answered by naka3546 last updated on 16/Apr/20

$$f\left(94\right)=4561$$

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