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Solve the initial-value problem explicitly

Accounting Dec 18, 2020

Solve the initial-value problem explicitly.

dudx=7x6−3x2+7dudx=7x6−3x2+7 and u=0u=0 when x=1x=1.

u=____

Expert Solution

First, we integrate the function:

u=∫dudxdxu=∫7x6−3x2+7dxu=x7−x3+7x+Cu=∫dudxdxu=∫7x6−3x2+7dxu=x7−x3+7x+C

Now, we use the initial value u(1)=0u(1)=0 to solve for the constant of integration:

0=u(1)0=17−13+7(1)+C0=7+CC=−70=u(1)0=17−13+7(1)+C0=7+CC=−7

Finally, we have the solution:

u=x7−x3+7x−7

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