Math, asked by ashishdhende, 5 months ago

Solve
d^2y/dx^2
+ 9y = sec 3x

Answers

Answered by amankumar991123

5

Answer:

${d}^{2y} \div \: {dx}^{2} + 9y = \sec \: 3x$

Answered by rajshrigitte1003

0

Answer:

for Mcq the correct answer is

D=+- 3i

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