Q. Solve the equation.dxdy=sin(y)x−sin(y)9Choose 1 answer:(A) y=arccos(−2x2+9x+C)(B) y=arccos(−2x2+9x)+C(C) y=cos(−x2+18x+C)2(D) y=cos(−x2+18x)2C
Simplify the equation: First, we need to simplify the right-hand side of the differential equation by combining the terms over a common denominator.dxdy=sin(y)x−sin(y)9dxdy=sin(y)x−9
Separate variables: Next, we separate the variables x and y to different sides of the equation to prepare for integration.sin(y)dy=(x−9)dx
Integrate both sides: Now, we integrate both sides of the equation with respect to their respective variables.∫sin(y)dy=∫(x−9)dx
Solve for y: The integral of sin(y) with respect to y is −cos(y), and the integral of (x−9) with respect to x is 2x2−9x.−cos(y)=2x2−9x+C, where C is the constant of integration.
Check solution: We solve for y by taking the arccosine of both sides.y=arccos(−(2x2−9x+C))
Final answer: We need to check if the solution matches any of the given answer choices.The correct answer choice that matches our solution is:(B) y=arccos(−2x2+9x)+C
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