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katrin2010 [14]
4 years ago
13

I don't quite understand when my test asks, "x when f(x)=-2" can someone please help?

Mathematics
1 answer:
Alinara [238K]4 years ago
7 0

Answer:

f(x) means y. So basically what is x when y = -2

Step-by-step explanation:

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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.) −
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When it comes to laplace equations, there are transformation equations to follow. Generally, when you want to transform a laplace equation, you change the equation from f(t) to F(s). If you do the reverse, it is called the reverse laplace equation.

Based on the given, the useful transformation equation is shown in the attached picture.

When the term is s^2, that must mean that the equation is 1!/s^(1+1) to yield 1/s^2. This means that n=1. Taking the reciprocal s^2 must be equal to 1/t. Thus, for the first term, -11s^2 is equal to -11/t. For the second term, n must be equal to 6 so that 6!/s^(6+1) would yield 720/s^7. Thus, 720s^7 is equal to 1/t^6. 

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Step-by-step explanation:

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4 0
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Lera25 [3.4K]

Answer:

-3.25 >-2.5 +r

Option 4 is right.

Step-by-step explanation:

Given picture is a graph of number line representing the area to the left of -0.75 not including -0.75

i.e. the graph shows r<-0.75, where r is a variable

Subtract 2.5 to both the sides

we get

-2.5+r <-0.75-2.5

or -2.5+r <-3.25

Or -3.25 >-2.5 +r

Option 4 is right.

Why other options are wrong:

i) 3.25<r+2.5.  0 satisfies this inequality but not included in the graph. Hence wrong.

ii)3.25>2.5+r

r=0 satisiffes this contradicting the graph again.

Thus second option is right.

iii) -3.25<-2.5+r

Here r =0 satisfies this equation contrary to graph.  Hence option iii is wrong.



7 0
3 years ago
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