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soldi70 [24.7K]

2 years ago

13

PLS I NEED HELP FOR THIS!

1 answer:

iogann1982 [59]2 years ago

6 0

Make all of the fractions have the same denominator, although what you do to the bottom you have to do to the top

for example 1:
3/5 - 1/7 the closest denominator that they both are able to multiply up to is 35 (7x5 and 5x7) so change them both and then multiply the top (1x5 and 3x7) then subtract giving you your answer

(not 100% sure i have not done these for years but that’s all i remember if you have notes check those fs!!!!)

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Determine the solutions of the equation. What solution

Vika [28.1K]

Answer: x=8

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4 0

3 years ago

Use Laplace transform methods to solve the differential equation: The initial conditions are f(0) = 0 and <img src="https://tex.

Llana [10]

Answer:

Step-by-step explanation:

$\frac{d^2 y}{dt^2} +12\frac{dy}{dt} +32y = 10e^{-2t}$ where f(x) is replaced by y

Take Laplace on both sides

$s^2 Y -s(0)-0 +12s Y-0+32Y = \frac{10}{s+2} \\Y(s^2+12s+32) = \frac{10}{s+2}\\Y = \frac{10}{(s+2)(s+4)(s+8)}$

We can resolve into partial fraction to get Y = L(y)

Let this equals

$\frac{A}{s+2} +\frac{B}{s+4} +\frac{C}{s+8} \\10 = A(s+4)(s+8) + B(s+2)(s+8) +Cs+4)(s+2) \\$

Solving we get

s=-9

24C = 10 or C =5/12

s=-2: A=10/12=5/6

s=-4: B = -5/4

Taking inverse Laplace

$y(t) = \frac{-5e^{-4t} }{4} + \frac{5e^{-8t} }{12} +\frac{-5e^{-2t} }{6}$

6 0

3 years ago

Help me for 1-4???????

Stolb23 [73]

1.A 2.B 3.B 4.D !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

7 0

3 years ago

Read 2 more answers

Help please help me please help please please help me please

GarryVolchara [31]

The answer is no. the first equation is not right

8 0

3 years ago

Read 2 more answers

(Will give 25 points) Given the graph of this trigonometic funaction over which domain(s) could inverse function be constructed

GREYUIT [131]

Answer:

ok so i think it it a or b i don't know but hope i am right

Step-by-step explanation:

5 0

2 years ago