Function notation
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Intros
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Examples
Lessons
- If f(x)=5x2−x+6 find the following
- f(♡)
- f(θ)
- f(3)
- f(−1)
- f(3x)
- f(−x)
- f(3x−4)
- 3f(x)
- f(x)−3
- If f(x) = 6 - 4x, find:
- f(3)
- f(-8)
- f(-2/5)
- If f(r) = 2πr2h, find f(x+2)
- If f(x)=x, write the following in terms of the function f.
- x+5
- x+5
- 2x−3
- −8x
- −82x−3
- 4x5+9−1
- If f(x) = -3x + 7, solve for x if f(x) = -15
- The temperature below the crust of the Earth is given by C(d) = 12d + 30, where C is in Celsius and d is in km.
i.) Find the temperature 15 km below the crust of the Earth.
ii.) What depth has a temperature of 186∘C?
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Topic Notes
Function notation is another way to express the y value of a function. Therefore, when graphing, we can always label the y-axis as f(x) too. It might look confusing, but let us show you how to deal with it.
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