if f(t)=1/t find the average rate of f with respect to t over the intervals from t=2 to t=3

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karthik kale 2019-8-3

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https://ww2.mathworks.cn/matlabcentral/answers/474721-if-f-t-1-t-find-the-average-rate-of-f-with-respect-to-t-over-the-intervals-from-t-2-to-t-3

评论： Navya Seelam 2019-8-6

syms t 
f(t)=1/t;
t=2;
t=3;
f(3)-f(2)/3-2
disp(t)

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Geoff Hayes 2019-8-3

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karthik - what exactly is your question? Why do you have this line of code

f(3)-f(2)/3-2

? Is this supposed to be your average (though isn't being assigned to anything)? Be careful here...you may want to add some brackets around the numerator and denominator...

KALYAN ACHARJYA 2019-8-3

编辑：KALYAN ACHARJYA 2019-8-3

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Is this?

syms t 
f(t)=1/t;
t=2;
t=3;
ft_averg=(f(3)-f(2))/(3-2);
disp(ft_averg);

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回答（1 个）

Navya Seelam 2019-8-6

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编辑：Navya Seelam 2019-8-6

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Hi,

Do you want to find average rate or average? Method to find both is given below

syms t 
f=@(t) 1./t;
tmin=2;
tmax=3;
average_rate=(f(3)-f(2))/(tmax-tmin)  % average rate of f(t) with respect to t
average=integral(f,tmin,tmax)/(tmax-tmin)  % average of f(t) 