Calculus Volume 1 · free preview

The Mean Value Theorem

The mean value theorem connects average and instantaneous rates, guaranteeing a point where the tangent parallels the secant, and from it follow monotonicity, the zero-derivative characterization of constants, and the comparison of functions.

1. Rolle's theorem

Rolle's theorem

2. The mean value theorem

The mean value theorem

3. Consequences for monotonicity

Consequences for monotonicity

4. Bounding differences

Bounding differences

5. Rolle's theorem hypotheses

Which trio of hypotheses makes the conclusion of Rolle's theorem valid on [a, b]?

6. Mean value theorem conclusion

The mean value theorem applied to f on [a, b] guarantees a point c in (a, b) satisfying which equation?

7. Speeding ticket logic

A highway patrol photographs a car at mile 0 and again at mile 120 exactly 2 hours later. A mean value theorem argument supports what conclusion?

8. Zero derivative consequence

A differentiable function f satisfies f prime of x = 0 for every x in an interval. What does the mean value theorem imply about f on that interval?

9. Derivative sign and monotonicity

On an open interval, f prime of x is positive at every point. Which conclusion follows from the mean value theorem?

10. Proof reduction

The standard proof of the mean value theorem reduces it to Rolle's theorem by which construction?

11. Secant slope computation

For f(x) = x^2 on [1, 3], the secant slope (f(3) - f(1))/(3 - 1) equals what number? Answer with a number.

12. Where tangent parallels secant

For f(x) = x^2 on [1, 3], the mean value theorem point c satisfies f prime of c = 2c = 4. What is c? Answer with a number.

13. MVT hypothesis count

The mean value theorem requires continuity on the closed interval and differentiability on the open one. How many distinct hypotheses are there? Answer with a number.

14. Lipschitz bound

f(0) = 3 and |f prime of x| is at most 5 everywhere. By the mean value theorem bound, |f(2) - 3| is at most what number? Answer with a number.

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