Ferino H.

Engineering graduate student at USC

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Linear Algebra

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Question:

let matrix A = [5 2 9 3] does the inverse of matrix A exists? if so, find the inverse of matrix A

Ferino H.

Answer:

a) yes the inverse of matrix A exists, because det(A) is not zero det(A) = 5*3 - 9*2 = 15 - 18 = -3 ; because det(A) is not zero, inverse of A exists b) inverse of matrix A A^-1 = (1/det(A)) * [3 -2 -9 5] A^-1 = [-1 2/3 3 -5/3]

Mechanical Engineering

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Question:

The subject of mechanical engineering is extremely diverse ranging from statics, dynamics, control system, fluid dynamics, thermodynamics, heat transfer, machine design, etc. Which particular subject in mechanical engineering do you want me to answer?

Ferino H.

Answer:

I can answer all of the question pertaining to the subjects I mentioned above. However, I specialize in statics, dynamics and control system.

Calculus

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Question:

y = 3x^2 + sin(5x) - 3*(x-2) + e^x; what is y'?

Ferino H.

Answer:

y' = 6x + 5cos(5x) - 3 + e^x

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