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Answers for “一阶线性方程的通解公式是什么?”

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Divide both sides by dx and (1+ex1+e^x) to isolate dy/dxdy/dx, yielding dy/dxdy/dx = (ye^x)/(1+ex1+e^x). Then, move the term containing y to the left side to match the standard linear structure y' + p(x)y=q(x)p(x)y = q(x).

Conditions: The equation is a first-order differential equation.; (1+ex1+e^x) is never zero, so division is valid.

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Take the reciprocal of both sides to swap the roles of the independent and dependent variables, yielding dx/dy=(x+y2)/ydx/dy = (x+y^2)/y. Split the fraction on the right side to get dx/dy=(1/y)x+ydx/dy = (1/y)x + y.

Conditions: The equation is a first-order differential equation.; y is not equal to zero, allowing division by y and taking the reciprocal.

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First, rearrange the terms to isolate the dy term: xdy = -(y - x sin x)dx. Divide both sides by dx and then by x to get dy/dx=−(y−xsin⁡x)/xdy/dx = -(y - x \sin x)/x.

Conditions: The equation is a first-order differential equation.; x is not equal to zero, allowing division by x.