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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §9.4 Complex Numbers, #28 · Complex Numbers · Polar form

What is the solution of … starting from

What is the solution of $d y / d t = i y$ starting from $y_{0} = 1$ ? For this solution, matching real parts and imaginary parts of $d y / d t = i y$ gives ____ and ____.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §9.4 Complex Numbers, #28

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