3.1 Solve the following equations: z² (1+3i)z - 5i = 0 ● sinh z = –2 ● e² = 2-i

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A: Unitary matrix: U#U=UU#=I

Q: B. find polar form of the complex number z = (2√3-41)+(-√3+ 5i).

A: The complex number z=x+iy in the form of polar co-ordinate z=rcost+i rsint Where r=x2+y2

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A: Please see the attachment  4th option is correct

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Q: Part 2. Solutions to Some First Order DE. Solve the following DE: 2 3 y' + ²y = ²y²; y(1) = 3

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