(a) Use the fact that 5x2 − y2 = c is a one-parameter family of solutions of the differential equation y dy/dx = 5x to find an implicit solution of the initial-value problem y dy/dx = 5x, y(4) = −10.
Then sketch the graph of the explicit solution of this problem.
Give the interval I of definition of the explicit solution. (Enter your answer using interval notation.)
(b) Are there any explicit solutions of y dy/dx =
5x that pass through the origin? (If yes, enter the
explicit solutions as a comma-separated list. If not, enter
NONE.)
y =
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