Precalculus Solutions | Expert Assistance for Problems & Examples

If A and B are $n \times n$ diagonalizable matrices , then A+B is also diagonalizable.
True or False?

sagnuhh 2020-12-29

The position vector $r (t) = ⟨ \ln t, \frac{1}{t^{2}}, t^{4} ⟩$ describes the path of an object moving in space.
(a) Find the velocity vector, speed, and acceleration vector of the object.
(b) Evaluate the velocity vector and acceleration vector of the object at the given value of $t = \sqrt{3}$

Haven 2020-12-28

Use the definition of the matrix exponential to compute eA for each of the following matrices:
$A = [\begin{matrix} 1 & 0 & - 1 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{matrix}]$

Kyran Hudson 2020-12-28

Define Invertible Matrices. Give an example.

Cem Hayes 2020-12-28

Explain the concept of Inverse Matrices?

opatovaL 2020-12-27

Perform the indicated matrix operations B - A given that A, B, and C are defined as follows. If an operation is not defined, state the reason.
$A = [\begin{matrix} 4 & 0 \\ - 3 & 5 \\ 0 & 1 \end{matrix}] B = [\begin{matrix} 5 & 1 \\ - 2 & - 2 \end{matrix}] C = [\begin{matrix} 1 & - 1 \\ - 1 & 1 \end{matrix}]$

he298c 2020-12-25

For the given systems of linear equations, determine the values of $b_{1}, b_{2}, and b_{3}$ necessary for the system to be consistent. (Using matrices)
$x - y + 3 z = b_{1}$
$3 x - 3 y + 9 z = b_{2}$
$- 2 x + 2 y - 6 z = b_{3}$

sanuluy 2020-12-25

The sample area should be
$S = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 .$
Assume that the results are equally likely. Calculate the likelihood that the event E="an even number less than 9" will occur.

aortiH 2020-12-25

The $2 \times 2$ matrices A and B below are related to matrix C by the equation: $C = 3 A - 2 B$ . Which of the following is matrix C.
$A = [\begin{matrix} 3 & 5 \\ - 2 & 1 \end{matrix}] B = [\begin{matrix} - 4 & 5 \\ 2 & 1 \end{matrix}]$
$[\begin{matrix} - 1 & 5 \\ 2 & 1 \end{matrix}]$
$[\begin{matrix} - 18 & 5 \\ 10 & 1 \end{matrix}]$
$[\begin{matrix} 18 & - 5 \\ - 10 & - 1 \end{matrix}]$
$[\begin{matrix} 1 & - 5 \\ - 2 & - 1 \end{matrix}]$

fortdefruitI 2020-12-25

Make a perfect square trinomial out of the binomial by figuring out the constant that needs to be added, then write it down and factor it.
$x^{2} - 3 x .$

Wierzycaz 2020-12-25

Find the value of each trigonometric ratio to the nearest ten-thousandth
${\tan 50}^{\circ}$

sibuzwaW 2020-12-25

Determine the exact value of expression.
$\tan (60) \times 3 \sin (90) - \sin (315)$

Chesley 2020-12-25

Let f(x) = $4 x^{2} - 6$ and $g (x) = x - 2 .$
(a) Find the composite function $(f \circ g) (x)$ and simplify. Show work.
(b) Find $(f \circ g) (- 1)$ . Show work.

foass77W 2020-12-24

Suppose a class consists of 4 students majoring in Mathematics, 3 students majoring in Chemistry and 4 students majoring in Computer Science. How many compositions are possible to form a group of 3 students if each group should consist at most 2 students majoring in Computer Science?

tricotasu 2020-12-24

Let $f (x) = x^{2} + 9 x$ and $g (x) = 9 x + 8$ perform the composition or operation indicated below $(f \circ g) (5)$ simplify the answer

Dolly Robinson 2020-12-24

Begin by graphing
$f (x) = 2^{x} .$
The given function can then be graphed by using transformations on this graph. Make sure to graph the asymptotes and provide their equations. To determine each function, use the graphs.

waigaK 2020-12-24

The reduced row echelon form of the augmented matrix of a system of linear equations is given. Determine whether this system of linear equations is consistent and, if so, find its general solution. Write the solution in vector form. $[\begin{matrix} 1 & - 2 & 0 & 0 & - 3 \\ 0 & 0 & 1 & 0 & - 4 \\ 0 & 0 & 0 & 1 & 5 \end{matrix}]$

Dolly Robinson 2020-12-24

Given n>1 , show that the set of all $1 \times n$ matrices of positive integers in countable.

remolatg 2020-12-22

Sketch a graph of the function. Use transformations of functions whenever possible. $f (x) = | x + 1 |$

ringearV 2020-12-22

The row echelon form of a system of linear equations is given.
(a) Write the system of equations corresponding to the given matrix.
Use x, y, or x, y, z, or $x_{1}, x_{2}, x_{3}, x_{4}$
(b) Determine whether the system is consistent. If it is consistent, give the solution.
$\begin{matrix} 1 & 0 & 3 & 0 & 1 \\ 0 & 1 & 4 & 3 & 2 \\ 0 & 0 & 1 & 2 & 3 \\ 0 & 0 & 0 & 0 & 0 \end{matrix}$

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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