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Concept explainers
a.
To Express: The quadratic function in standard form.
a.
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Answer to Problem 29E
the quadratic function is expressed in standard form as
Explanation of Solution
Given: The function is
Calculation:
The quadratic function
The parabola opens upwards if
Solve the function:
On comparing the above equation with standard form
Therefore, the quadratic function is expressed in standard form as
b.
To Sketch: The graph of the quadratic function.
b.
![Check Mark](/static/check-mark.png)
Explanation of Solution
Given: The function is
Graph:
The standard form of the function is:
From the standard form it is observed that the graph is a parabola that opens upward and has vertex
The
Use graphing calculator to graph the function:
c.
To Find: The maximum or minimum value of the function.
c.
![Check Mark](/static/check-mark.png)
Answer to Problem 29E
The value of
Explanation of Solution
Given: The function is
Calculation:
From the above graph it is seen that the parabola opens upward, since the coefficient of
Chapter 3 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
- 16. Solve each of the following equations for x. (a) 42x+1 = 64 (b) 27-3815 (c) 92. 27² = 3-1 (d) log x + log(x - 21) = 2 (e) 3 = 14 (f) 2x+1 = 51-2xarrow_forward11. Find the composition fog and gof for the following functions. 2 (a) f(x) = 2x+5, g(x) = x² 2 (b) f(x) = x²+x, g(x) = √√x 1 (c) f(x) = -1/2) 9 9(x) = х = - Xarrow_forwardpractice problem please help!arrow_forward
- 13. A restaurant will serve a banquet at a cost of $20 per person for the first 50 people and $15 for person for each additional person. (a) Find a function C giving the cost of the banquet depending on the number of people p attending. (b) How many people can attend the banquet for $2000?arrow_forwardAlt Fn Ctrl 12. Find functions f and g such that h(x) = (fog)(x). (a) h(x) = (x² + 2)² x+1 (b) h(x) = 5 3arrow_forward15. Find the exact value. (a) log4 16 (b) log7 1 49 (c) logs 3/25arrow_forward
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