In Exercises 1–6, (a) state the values of a, b, and c in the given quadratic function f ( x ) = a x 2 + b x + c ; (b) supply the missing values in the table below; (c) calculate f ( a + h ) ; and (d) give a valid technology formula for f ( x ) . (Optional: Use technology to check the values in the table.) [ HINT: See Quick Examples 1–3.] x –3 –2 –1 0 1 2 3 f ( x ) f ( x ) = − x 2 − 50
In Exercises 1–6, (a) state the values of a, b, and c in the given quadratic function f ( x ) = a x 2 + b x + c ; (b) supply the missing values in the table below; (c) calculate f ( a + h ) ; and (d) give a valid technology formula for f ( x ) . (Optional: Use technology to check the values in the table.) [ HINT: See Quick Examples 1–3.] x –3 –2 –1 0 1 2 3 f ( x ) f ( x ) = − x 2 − 50
Solution Summary: The author explains that the quadratic equation or function is one of the simplest functions having curved graph rather than a straight line.
In Exercises 1–6, (a)state the values of a, b, and c in the given quadratic function
f
(
x
)
=
a
x
2
+
b
x
+
c
; (b)supply the missing values in the table below;(c)calculate
f
(
a
+
h
)
; and(d)give a valid technology formula for
f
(
x
)
. (Optional: Use technology to check the values in the table.) [HINT: See Quick Examples 1–3.]
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
2. Find a matrix A with the following qualities
a. A is 3 x 3.
b. The matrix A is not lower triangular and is not upper triangular.
c. At least one value in each row is not a 1, 2,-1, -2, or 0
d. A is invertible.
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