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antiseptic1488 [7]
2 years ago
7

3x to the second power + 4x -7

Mathematics
1 answer:
slava [35]2 years ago
6 0
:) ksskskskakakakakakaoaoaoa
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Use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) ℒ
castortr0y [4]

We assume you want to find the inverse transform of s/(s^2 +3s -4). This can be written in partial fraction form as

(4/5)/(s+4) + (1/5)/(s-1)

which can be found in a table of transforms to be the transform of

(4/5)e^(-4t) + (1/5)e^t


_____

There are a number of ways to determine the partial fractions. They all start with factoring the denominator.

s^2 +3x -4 = (s+4)(s-1)


After that, you can postulate the final form and determine the values of the coefficients that make it so. For example:

A/(s+4) + B/(s-1) = ((A+B)s + (4B-A))/(s^2 +3x -4)


This gives rise to two equations:

(A+B) = 1

(4B-A) = 0

4 0
3 years ago
PLEASE HELP!!!<br> Find the common difference for the arithmetic sequence. -55, -50, -45, -40.....
Fed [463]

Answer:

5

Step-by-step explanation:

Just grap any two consecutive terms in the sequence. lets say -55 and -50

-50-(-55) = 5

you can check this by picking two other terms

7 0
2 years ago
PLEASE! An item costs 410 before tax, and the sales tax is 32.80.
Norma-Jean [14]

Divide the amount of the tax by the cost of the item:

32.80 / 410 = 0.08

Multiply by 100:

0.08 x 100 = 8%

Answer: 8%

8 0
2 years ago
What is the solution set to the following system?
elena-s [515]
The correct answer is C
3+ 0 is 3
3^2 + 0 is 9
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3 years ago
(21-6)/3 how much money each one will make
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