3. Using the definition of open sets, prove that an interval (0, a) is open where a > 0 is an arbitrary positive number.
3. Using the definition of open sets, prove that an interval (0, a) is open where a > 0 is an arbitrary positive number.
Intermediate Algebra
10th Edition
ISBN:9781285195728
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter2: Equations, Inequalities, And Problem Solving
Section2.7: Equations And Inequalities Involving Absolute Values
Problem 74PS
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Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
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