Precalculus
Functions and Graphs
Basic Definitions and Notations
Interactive Example 1
Example 1.
f(x) = 2 · x
2
- 3 · x + 1;
find
f(
a
)
.
Example 2.
f(x) = 2 · x
2
- 3 · x + 1;
find
f(
b · x + c
)
.
a
b
c
Solution
Substituting the input,
f(
)
=
2 ·
2
- 3 ·
+ 1
=
=
Solution
Substituting the input,
f(
)
=
2 · (
)
2
- 3 · (
) + 1
Squaring
=
Simplifying
=
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