In this lesson, we will learn how to form and derive the equation of a function from different situations.
Q1:
Find an expression for the area 𝐴 of a square as a function of its diagonal length 𝑑.
Q2:
A rectangular piece of land has a length 𝑥 m and an area of 2,775 m2. Find a function to calculate the width and find the width when the length is 75 m.
Q3:
An oil spill grows with time such that its boundary is always a circle. Suppose that the radius is given by 𝑟(𝑡)=5−𝑡 as a function of time 𝑡. Express the area of the spill 𝐴(𝑡) as a function of time.
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