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Multiple Choice
Find the particular solution to the differential equation y′=2et+4t given the initial condition y(0)=1.
A
y=2et+2t2
B
y=et+2t2−1
C
y=et+2t2+1
D
y=2et+2t2−1
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Verified step by step guidance
1
Step 1: Start with the given differential equation y' = 2e^t + 4t. The goal is to find the particular solution y(t) that satisfies this equation and the initial condition y(0) = 1.
Step 2: Integrate the right-hand side of the differential equation to find y(t). The integral of 2e^t with respect to t is 2e^t, and the integral of 4t with respect to t is 2t^2. Add these results together to get y(t) = 2e^t + 2t^2 + C, where C is the constant of integration.
Step 3: Use the initial condition y(0) = 1 to solve for the constant C. Substitute t = 0 and y = 1 into the equation y(t) = 2e^t + 2t^2 + C. This gives 1 = 2e^0 + 2(0)^2 + C. Simplify to find the value of C.
Step 4: Substitute the value of C back into the general solution y(t) = 2e^t + 2t^2 + C to obtain the particular solution.
Step 5: Verify the solution by substituting it back into the original differential equation y' = 2e^t + 4t and checking that it satisfies the equation. Also, confirm that the initial condition y(0) = 1 is satisfied.