10. Consider the differential equation modeling the harmonic oscillator z"(t) + k°r(t) = 0 (1) What is a correct solution to the equation? (a) r = 2(sin(kt) + cos(kt)) (b) x = A cos(kt) + B sin(kt) (c) r = A cos(kt) – B sin(kt) (d) r = k² sin(t) cos(t) (e) None of the above

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A: I have provided this answer in step-2.

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A: A detailed solution is given below

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A: The given identity

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A: According to question We have to calculate the equation of the graph.

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