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# Tutor profile: William H.

Inactive
William H.
Current Graduate Teaching Assistant and Former Engineering Course Supervisor
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## Questions

### Subject:Pre-Algebra

TutorMe
Question:

What are rational numbers used?

Inactive
William H.

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.

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

TutorMe
Question:

What is the purpose of the quadratic formula?

Inactive
William H.

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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