Maths calculus question help
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Maths calculus question help

[From: ] [author: ] [Date: 11-09-22] [Hit: ]
Integrate once: dy/dx =(7.2/-0.4)e^(-0.4t)+c=-18e^(-0.Integrate again: y=(-18/-0.4)e^(-0.......
The question is:

Show that the general solution to f''(x) = 7.2e^-0.4t is equal to y = 45e^-0.4t + ct + d.

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d^2y/dx^2=7.2e^(-0.4t)
Integrate once: dy/dx =(7.2/-0.4)e^(-0.4t)+c=-18e^(-0.4t)+c
Integrate again: y=(-18/-0.4)e^(-0.4t)+ct+d=as required
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