1. Consider the following differential equation:
(1-c/r)(dt/dl)2 - (1-c/r)-1(dr/dl)2 = 0
(a) Show that this equation can be written as
dr/dt = (1-c/r)
(b) Solve the above equation for t(r). Please evaluate integrals by hand.
Take c to be a constant
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keywords: integration, integrates, integrals, integrating, double, triple, multiple
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