# Tutor profile: William H.

Inactive

William H.

Current Graduate Teaching Assistant and Former Engineering Course Supervisor

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## Questions

### Subject: Pre-Algebra

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Question:

What are rational numbers used?

Inactive

William H.

Answer:

Due to decimals of many fractions having many numbers after the decimal point, most numbers that need to be accurate stay in the form of the fraction.

### Subject: Calculus

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Question:

What is the point and application of a derivative?

Inactive

William H.

Answer:

In calculus and applied mathematics, a derivative of any equation that has a variable (x or higher power) will result in the equation of rate of change.

### Subject: Algebra

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Question:

What is the purpose of the quadratic formula?

Inactive

William H.

Answer:

When 3 variables are present (x^2, x, and c), this constitutes a quadratic equation. To solve this equation, one must use the quadratic formula to obtain the variable solution.

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