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Initial-Value Problems: An initial-value problem is a differential equation together with an initial condition that specifies one value of a function.

  • Find the solution f to the initial-value problem role="math" localid="1649824652213" f'(x)=sinex ,f(Ï€)=0.

Short Answer

Expert verified

Ans: The solution to the given initial value problem isf(x)=Siex-Sieπ

Step by step solution

01

Step 1. Given information:

Consider the differential equation f'(x)=sinex

02

Step 2. Solving the differential equation :

Integrate on both sides

∫f'(x)=∫sinexdxf(x)=∫sinuudu∵u=sinexf(x)=Si(u)∵∫sinuudu=Si(u)f(x)=Siex+C

Apply initial condition f(Ï€)=0

f(π)=Sieπ+C0=Sieπ+CC=-Sieπ⇒f(x)=Siex-Sieπ

Here, Siex is the nonelementary function.

Hence, the solution of the given differential equation is f(x)=Siex-Sieπ

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