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3 years ago

3x + 4y = 14– 3x – 4y = -14 solve using Gauss-jordan elimination

Mathematics

1 answer:

GenaCL600 [577]3 years ago

4 0

Answer:

Step-by-step explanation:

Matrix'is determinat:

X1 Y1

X2 Y2

D=(X1*Y2) - (X2*Y1)

D=(3X-4) - (-3*4)

D=0

Determinant of X

I 1 Y1

I 2 Y2

DX=( I 1 *Y2) - ( I 2*Y1)

DX= (14* -4) - (-14*4)

DX=0

Determinant of Y

X1 I 1

X2 I 2

DY= (X1 * I2) - (X2* I1)

DY=(3X-14) - (-3*14)

DY=0

The result of the variables are solved by:

X=DX/D.... Y=DY/D

X=0/0 Y=0/0

X=NaN Y=NaN

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2 years ago

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2 years ago

Given that f(–2.4) = -1 and f(-1.9) = -8, approximate f'(-2.4). f'(-2.4)

lora16 [44]

Answer:

f'(-2.4) ≈ -14

General Formulas and Concepts:
Algebra I

Coordinate Planes

Coordinates (x, y)

Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Functions

Function Notation

Calculus

Differentiation

Derivatives
Derivative Notation

Step-by-step explanation:

*Note:

The definition of a derivative is the slope of the tangent line.

Step 1: Define

Identify.

f(-2.4) = -1

f(-1.9) = -8

Step 2: Differentiate

Simply plug in the 2 coordinates into the slope formula to find slope m.

[Derivative] Set up [Slope Formula]: $\displaystyle f'(-2.4) \approx \frac{f(x_2) - f(x_1)}{x_2 - x_1}$
Substitute in coordinates: $\displaystyle f'(-2.4) \approx \frac{-8 - -1}{-1.9 - -2.4}$
Evaluate: $\displaystyle f'(-2.4) \approx -14$

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Learn more about derivatives: brainly.com/question/17830594

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Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentiation

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2 years ago

Cam is a corrupt politician. Nobody votes for him except those he pays to do so. It costs Cam exactly \$100$100 to buy each vote

dolphi86 [110]

Answer:

Yes, Cam's costs proportional to the number of votes he receives.

Step-by-step explanation:

It is given that Cam is a corrupt politician. Nobody votes for him except those he pays to do so. It costs Cam exactly $100 to buy each vote.

Let the number of votes he get be x.

Then the total cost of Cam is

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2 years ago

What is the solution to the system of linear equations? 2x + 3y = 3 3x + 5y = 5 Enter you answer into the boxes.

aleksandr82 [10.1K]

Answer:

x = 0

y = 1

Step-by-step explanation:

2x + 3y = 3 Multiply this equation by 3

3x + 5y = 5 Multiply this equation by 2

3(2x + 3y = 3)

6x + 9y = 9

2(3x + 5y = 5 )

6x + 10y = 10 Notice the xs are the same.

6x + 9y = 9

6x + 10y =10 Subtract

- y = - 1 Multiply each side by -1

y = 1

2x + 3y = 3

2x + 3*1 = 3

2x = 0

x =0

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2 years ago

3x + 4y = 14– 3x – 4y = -14 solve using Gauss-jordan elimination​

3x + 4y = 14– 3x – 4y = -14 solve using Gauss-jordan elimination