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3 years ago

Given f(x) =3x-7, find f(x+1)+f(1)

Mathematics

1 answer:

ELEN [110]3 years ago

3 0

Answer:

3x - 8

Step-by-step explanation:

To find f(x + 1) substitute x = x + 1 into f(x)

f(x + 1) = 3(x + 1) - 7 = 3x + 3 - 7 = 3x - 4

Similarly

f(1) = 3(1) - 7 = 3 - 7 = - 4

Hence

f(x + 1) + f(1) = 3x - 4 - 4 = 3x - 8

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The differential equation is $\frac{dx(t)}{dt} = k x(t) [7000 - x(t)]$

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