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Tutor profile: Jianhong Z.

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Jianhong Z.
Math/Physics at all level
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Questions

Subject: Calculus

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Question:

Elementary calculus in a nutshell?

Inactive
Jianhong Z.
Answer:

Exponentials grow faster than Polynomials and Polynomial grow faster than Logarithms. (Use Taylor Series to Explain)

Subject: Physics

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Question:

Is observable in quantum mechanics represented by the Hermitian operator?

Inactive
Jianhong Z.
Answer:

Not always! In fact, overstable are represented by the self-adjoint operators which are a little stricter than just being Hermitian. A classical example is the momentum operator in a particle in a box, which does not have a proper eigenvalue despite being a Hermitian operator.

Subject: Differential Equations

TutorMe
Question:

What is the most powerful technique to solve a differential equation?

Inactive
Jianhong Z.
Answer:

Guessing! But educated guessing! This skill relies on the familiarity of the various solutions to different types of differential equations and techniques to obtain them.

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