Using your own words, explain direct and inverse proportionality. (Be sure to use complete sentences.)

2 answers:

8 0

In an inverse proportion two veriables are inversely proportional to each other.You can write the equation as P=n/x, and N is the constant of proportionality.In the equation the X increases and the P decreases.

slamgirl [31]4 years ago

8 0

Answer:

Whenever we talk about direct or inverse proportionality we talk about two variables

Suppose we have two variables x and y they are said to be in direct proportionality if they one vary same as the other

For eg:

x=3y

Here, whenever x increases y will increase and when x decreases y will decrease.

On the contrary, the two variables when have opposite behaviour

For eg:

x=3/y

Here, whenever x increases y will decrease and when x decreases y will increase.

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Solve 3sinx-4sin^3 x= -1

postnew [5]

Hello,

Since 3sin x-4sin^3x=sin (3x) (*****)
3sin x-4sin^3x=-1
==>sin (3x)=-1
==>3x=3π/2 +2kπ
==>x=π/2+2kπ/3, k being an integer

(*****)
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=sin x(cos²x-sin²x)+2cos²x sin x
=sin x(cos²x+2cos²x-sin²x)
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4 years ago

How do i do this? I dont really know where to start

Alex787 [66]

Well, I don’t necessarily remember how to sketch a plane. However, I can help get you started by defining some words they use and hopefully you will be able to do this on your own!

So this plane is made up of three points, names E, D and B. (Edit: This plane may be made up of four points, because of point A.)

E and B are collinear with A. This basically means that they all are on the same line.

D is a vertex. This basically means that it is a dot that these two lines called rays will shoot out of it. I will attach a picture of a vertex.

CD and FD are called rays. See those little lines above them? I’ll be sure to attached another image so that you know what I’m taking about. Anyway, that means they are rays. Rays are like never ending lines; they start at a point and the line will go on for infinity.

(Edit: where did the point f come from? I really wish you would have attached the full picture...)

Whelp, that’s all I’ve got! Good luck!!

(Edit: looks like I can only attach one picture...I’ll comment the other.)

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3 years ago

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