Precalculus Solutions | Expert Assistance for Problems & Examples

Fill in each blank so that the resulting statement is true. "After performing polynomial long division, the answer may be checked by multiplying the by the , and then adding the . You should obtain the ."

ddaeeric 2020-11-27

Given $B = [\begin{matrix} - 3 & - 3 \\ 1 & - 2 \end{matrix}] and C = [\begin{matrix} - 15 & - 6 \\ 1 & 10 \end{matrix}]$
Solve $3 X + B = C$
X=?

Nann 2020-11-26

Given
$f (x) = 2 - x 2, g (x) = \sqrt{x + 2}$
$f (x) = \sqrt{x}, g (x) = \sqrt{1 - x}$
(a) write formulas for $f \circ g$ and $g \circ f$ and find the
(b) domain and
(c) range of each.

Harlen Pritchard 2020-11-26

Explain why the formula is not valid for matrices. Illustrate your argument with examples.
$(A + B) (A + B) = A^{2} + 2 A B + B^{2}$

Wotzdorfg 2020-11-24

Solve for Vt
$[\begin{matrix} 20 & - 20 & 0 & 0 & 0 \\ - 20 & 41 & - 18 & 0 & - 3 \\ 0 & - 18 & 28 & - 6 & - 4 \\ 0 & 0 & - 6 & 85 & - 2 \\ 0 & - 3 & - 4 & - 2 & 23 \end{matrix}] [\begin{matrix} i_{t} \\ i_{1} \\ i_{2} \\ i_{3} \\ i_{4} \end{matrix}] = [\begin{matrix} v_{t} \\ 0 \\ 0 \\ 0 \\ 0 \end{matrix}]$

Nannie Mack 2020-11-24

Let $A = I_{2}$ and $B = [\begin{matrix} 1 & 1 \\ 0 & 1 \end{matrix}]$ . Discuss the validity of the following statement and cite reasons for your conclusion:
If A and B have the same trace , determinant , rank , and eigenvalues , then the matrices are similar.

remolatg 2020-11-24

Use a software program or a graphing utility with matrix capabilities to find the transition matrix from B to B

Rui Baldwin 2020-11-23

Find the product AB of the two matrices listed below:
$A = (\begin{matrix} 2 & 1 & 3 \\ - 2 & 2 & 4 \\ - 1 & - 3 & - 4 \end{matrix})$
$B = (\begin{matrix} - 1 & - 2 \\ 1 & 2 \\ 3 & 4 \end{matrix})$

glasskerfu 2020-11-23

Graph f and g in the same rectangular coordinate system. Use transformations of the graph f of to obtain the graph of g. Graph and give equations of all asymptotes. Use the graphs to determine each function's domain and range. $f (x) = 2^{x} and g (x) = 2^{x - 1}$

snowlovelydayM 2020-11-23

Given the matrices $A = [\begin{matrix} - 2 & 5 \\ - 5 & - 5 \end{matrix}] and B = [\begin{matrix} - 5 \\ 2 \end{matrix}]$ AB=?

a2linetagadaW 2020-11-23

Which of the following sets are equal?
A = {a,b,c,d}
B = {d,e,a,c}
C = {d,b,a,c}
D = {a,a,d,e,c,e}

tabita57i 2020-11-23

Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution.
x+4y=0 x+5y+z=1 5x-y-z=79

jernplate8 2020-11-22

If the matrix X has a dimension of $4 \times 6$ , matrix A has a dimension of $5 \times 5$ , matrix B has a dimension of $3 \times 5$ and matrix D has a dimension of $4 \times 6$ ,The dimension of D' is $6 \times 4$ . True or false

floymdiT 2020-11-22

Let A and B be $n \times n$ matrices. Show that if AB is non- singular, then A and B must be nonsingular.

rocedwrp 2020-11-22

Evaluate the determinant of each of the following matrices:
a. $[[5, 6], [7, 3]]$
b. $[[2, 4], [- 3, - 5]]$

Brittney Lord 2020-11-20

Graph each polynomial function. Factor first if the expression is not in factored form.
$f (x) = 2 x^{3} (x^{2} - 4) (x - 1)$

ddaeeric 2020-11-20

A large urn in your kitchen is full of fruit. There are six apples, four oranges, and five pears. What percentage of the mixed fruit are apples? What percentage are not apples?

Cabiolab 2020-11-17

Let $A = (\begin{matrix} 2 & 1 \\ 6 & 4 \end{matrix})$
a) Express $A^{- 1}$ as a product of elementary matrices
b) Express A as a product of elementary matrices

Braxton Pugh 2020-11-16

This semester you have learnt how to solve simultaneous equations algebraically. Another method of solving these equations is using Cramers

Dillard 2020-11-16

Solve the expression: 1/5(2a – 3)

Precalculus problems and solutions are hard to find online even though this topic is quite popular among college students majoring in Engineering. Keeping this fact in mind, we decided to provide you with a list of questions and answers that will help you with various precalculus problems. Regardless if it is related to equations or any other problem, these precalculus problems and composite functions examples and solutions below will help you see the logic and compare solutions as you check your original task.

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