
Concept explainers
a.
To calculate: The discriminant of the function
a.

Answer to Problem 62STP
The value of the discriminant is
Explanation of Solution
Given information:
The supporting cables of the Golden Gate Bridge are shaped like parabola and modelled by equation
Formula used:
For a
Calculation:
Consider the equation
Recall that for a quadratic equation
Therefore, discriminant of provided equation is,
Thus, the value of the discriminant is
b.
To describe: The discriminant of the function
b.

Answer to Problem 62STP
Modelled equation of supporting cables of Golden Gate Bridge is not correct.
Explanation of Solution
Given information:
The supporting cables of the Golden Gate Bridge are shaped like parabola and modelled by equation
Formula used:
For a quadratic equation
Calculation:
Consider the equation
Recall that for a quadratic equation
Therefore, discriminant of provided equation is,
Since, discriminant is negative so equation will have imaginary zeros. In real time this does not valid. Equation must have real zeros.
Thus, the modelled equation of supporting cables of Golden Gate Bridge is not correct.
Chapter 6 Solutions
Algebra 2
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