Finding Limits at Infinity In Exercises 11 and 12, find lim x ← ∞ h ( x ) , if it exists. In Exercises 11 and f ( x ) = 4 x 2 + 2 x − 5 (a) h ( x ) = f ( x ) x (b) h ( x ) = f ( x ) x 2 (c) h ( x ) = f ( x ) x 3
Finding Limits at Infinity In Exercises 11 and 12, find lim x ← ∞ h ( x ) , if it exists. In Exercises 11 and f ( x ) = 4 x 2 + 2 x − 5 (a) h ( x ) = f ( x ) x (b) h ( x ) = f ( x ) x 2 (c) h ( x ) = f ( x ) x 3
Solution Summary: The author explains how the limit of a rational function at infinity could be computed.
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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