Questions: Use the given graph to evaluate the following expressions.
(a) (f + g)(2)
(b) (f - g)(1)
(c) (fg)(0)
(d) (f/g)(1)
Transcript text: Use the given graph to evaluate the following expressions.
(a) $(\mathrm{f}+\mathrm{g})(2)$
(b) $(\mathrm{f}-\mathrm{g})(1)$
(c) $(\mathrm{fg})(0)$
(d) $\left(\frac{f}{g}\right)(1)$
Solution
Solution Steps
Step 1: Evaluate \( f(2) \) and \( g(2) \)
From the graph:
\( f(2) = 0 \)
\( g(2) = 2 \)
Step 2: Calculate \( (f + g)(2) \)
Using the values from Step 1:
\[ (f + g)(2) = f(2) + g(2) = 0 + 2 = 2 \]
Step 3: Evaluate \( f(1) \) and \( g(1) \)
From the graph:
\( f(1) = 1 \)
\( g(1) = 1 \)
Step 4: Calculate \( (f - g)(1) \)
Using the values from Step 3:
\[ (f - g)(1) = f(1) - g(1) = 1 - 1 = 0 \]
Step 5: Evaluate \( f(0) \) and \( g(0) \)
From the graph:
\( f(0) = 2 \)
\( g(0) = 0 \)
Step 6: Calculate \( (fg)(0) \)
Using the values from Step 5:
\[ (fg)(0) = f(0) \cdot g(0) = 2 \cdot 0 = 0 \]