Curriculum
Pure Mathematics — Second Secondary
Unit 1: Real Functions and Curve Sketching
0/8
Unit 2: Exponents and Logarithms
0/12
Unit 3: Limits
0/6
Unit 4: Trigonometry
0/4
Text lesson
Real Functions
Real Functions
Lesson summary
Lesson summary
- A real function links each element of the domain to exactly one element of the range.
- The vertical line test shows whether a graph represents a function.
- The domain of a rational function excludes values that make the denominator zero.
- The domain of a square-root function requires the expression under the root to be greater than or equal to zero.
- To find x from a known output, form an equation, solve it, and then check the answer.
Real Functions · 6 / 6
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