f(t) = 400t+70/t+1 represents the temp. in an oven and f(t) is in F degrees(adsbygoogle = window.adsbygoogle || []).push({});

first i used the quotient rule and got 330/(t+1)^2 = f'(t)

A) the rate of change in temp of the ove with respect to the time of 2 minutes after turnig the oven on and at 10 minutes

i pluged 2 and 10 in for t in the equation above

330/(2+1)^2 = = 36.67 F degrees per min

330/(10+1)^2 == 2.73 F degrees per min

B) fined the rate of change of temp when the oven is 350 degrees

i plugged in 350 where f(t) is

and got t = 5 min

thanks joe

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# Differentiation rule ?

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