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GRADE 11 MATH · CHAPTER 1

Algebra & functions

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  1. Algebra

    Multiply a pair of complex conjugates

    Use i² = −1 and conjugate structure to find a real product.

    Study lesson Practise

  2. Functions

    Evaluate an inverse linear function

    Reverse a nonconstant linear rule to recover an input.

    Study lesson Practise

  3. Functions

    Compose two functions

    Evaluate an inner function and use its result as the input of an outer function.

    Study lesson Practise

  4. Functions

    Model repeated percent growth

    Evaluate repeated growth using a constant multiplicative factor.

    Study lesson Practise

  5. Functions

    Read a logarithm as an exponent

    Connect a logarithm with the corresponding exponential statement.

    Study lesson Practise

AN EXAMPLE FROM THIS CHAPTER

Let i2 = −1. Find (2 + 3i)(2 − 3i).

Show answer & explanation

13

The middle terms cancel. 22 − (3i)2 = 4 − 9(−1) = 13.

Curriculum & source notes

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