(Section 1.2: Graphs of Functions) 1.2.15 PART I: USING OTHER NOTATIONWARNING 10:Don’t get too attached to y,f,and x. Be flexible. Example 13 (Falling Coin)You drop a coin from the top of a building. • Let tbe the timeelapsed (in seconds) since you dropped the coin. • Let hbe the height(in feet) of the coin. • Let sbe a position functionsuch that h=st(). We ignore what happens after the coin hits the ground. Instead of graphing y=fx, we graph h=. • t, not x, is the independent variable. • h, not y, is the dependent variable
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