Q. Solve the equation.dxdy=6eyx2Choose 1 answer:(A) y=±−2e−x+C+10(B) y=±−2e−x+C(C) y=ln(18x3+C)(D) y=ln(18x3)+C
Separate variables: We are given the differential equation dxdy=6eyx2. This is a separable differential equation, which means we can separate the variables y and x on different sides of the equation. Let's do that.
Isolate dy term: Multiply both sides by 6ey to get 6ey⋅dxdy=x2. This isolates the dy term on the left side.
Divide by x2: Now, divide both sides by x(2) to get 6ey⋅dxdy⋅x21=1. This isolates the dx term on the right side.
Integrate with respect: We can now integrate both sides with respect to their respective variables. The left side with respect to y and the right side with respect to x. So we have ∫6eydy=∫(x21)dx.
Solve for ey: The integral of 6ey with respect to y is 6ey, and the integral of (1/x2) with respect to x is −1/x. So we have 6ey=−1/x+C, where C is the constant of integration.
Take natural logarithm: Now, we divide both sides by 6 to solve for ey. This gives us ey=6x−1+6C.
Correct constant of integration: To solve for y, we take the natural logarithm (ln) of both sides. This gives us y=ln((−6x1)+6C).
Correct constant of integration: To solve for y, we take the natural logarithm (ln) of both sides. This gives us y=ln(6x−1+6C).However, there is a mistake in the previous step. The constant of integration should be a separate term, not divided by 6. We should have ey=6x−1+C, and then take the natural logarithm of both sides to get y=ln(6x−1+C).
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