texelaare
2021-09-26
Answered

Determine which equations are linear equations in the variables x, y, and z. If any equation is not linear, explain why not.

$\left(\mathrm{cos}3\right)x-4y+z=\sqrt{3}$

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AGRFTr

Answered 2021-09-27
Author has **95** answers

Given,

Step 2

The general linear equation in three variables is in the form of

The given equation is in the form of

where

Hence given equation is a linear equation.

asked 2020-10-18

Find a least squares solution of Ax=b by constructing and solving the normal equations.

$A=\left[\begin{array}{cc}3& 1\\ 1& 1\\ 1& 4\end{array}\right],b\left[\begin{array}{c}1\\ 1\\ 1\end{array}\right]$

$\stackrel{\u2015}{x}=$ ?

asked 2021-02-08

Working with parametric equations Consider the following parametric equations.

a. Eliminate the parameter to obtain an equation in x and y.

b. Describe the curve and indicate the positive orientation.

$x=-7\mathrm{cos}2t,y=-7\mathrm{sin}2t,0\le t\le \pi$

a. Eliminate the parameter to obtain an equation in x and y.

b. Describe the curve and indicate the positive orientation.

asked 2021-09-27

Solve each equation. ${n}^{2}+25n+156=0$

asked 2021-12-05

In order to solve for

Multiply both sides of the equation by the same expression:

The resulting equation is:

asked 2020-10-18

Use the method of substitution to solve the following system of equations. If the system is dependent, express the solution set in terms of one of the variables. Leave all fractional answers in fraction form.

y=-11

x+2y=7

y=-11

x+2y=7

asked 2021-02-21

Solve the given system of equations by matrix equation.

5x-4y=4

3x-2y=3

5x-4y=4

3x-2y=3

asked 2021-12-11

How do you foil ${(x-1)}^{2}?$