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3 years ago

Lim

Mathematics

1 answer:

insens350 [35]3 years ago

4 0

Answer:

Step-by-step explanation:

f(-9+h)= (-9+h)² = h²-18h+81

f(-9+h)-f(-9)=h²-18h+81 -81 because : f(-9) = (-9)² = 81

f(-9+h)-f(-9)=h²-18h

(f(-9+h)-f(-9))/h=(h²-18h)/h = h(h-18)/h =h-18

lim (f(-9+h)-f(-9))/h = lim(h-18= - 18

h→0 h→0

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