Solve the initial-value problem for the homogeneous differential equation: , with . What is the explicit solution for in terms of ?
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- 0. Functions7h 55m
- Introduction to Functions18m
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13. Intro to Differential Equations
Basics of Differential Equations
Multiple Choice
Solve the differential equation by separation of variables.
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Verified step by step guidance1
Rewrite the given differential equation x * (dy/dx) = 6y in a form suitable for separation of variables. Divide both sides by y and multiply both sides by dx to isolate the variables: (1/y) dy = (6/x) dx.
Integrate both sides of the equation. On the left-hand side, integrate ∫(1/y) dy, which results in ln|y|. On the right-hand side, integrate ∫(6/x) dx, which results in 6 ln|x|.
Combine the results of the integration: ln|y| = 6 ln|x| + C, where C is the constant of integration.
Exponentiate both sides to eliminate the natural logarithm. This gives |y| = e^(6 ln|x| + C). Using properties of exponents, rewrite this as |y| = e^C * e^(6 ln|x|).
Simplify further using the property e^(ln|x|^6) = |x|^6. The solution becomes y = C * x^6, where C is a constant that absorbs e^C. Note that other forms of the solution (e.g., y = C * x^{-6}, y = C * e^{6x}, etc.) are incorrect based on the separation of variables method.
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