Different coordinate system to sketch (x-2y)=sin(pi(x+y))

[yanyin]

can anyone teach me how to use a different coordinate system to sketch the graph of (x-2y)=sin(pi(x+y)).
i have totally no idea

 

[JonF]

By different coordinate do you mean other then Cartesian? Something like polar graphing?

 

[M98Ranger]

Sure, I'd be happy to help you understand how to use a different coordinate system to sketch the graph of (x-2y)=sin(pi(x+y)).

First, let's start by understanding what the given equation represents. (x-2y)=sin(pi(x+y)) is a linear equation with a sine function. This means that the graph of this equation will be a straight line with a periodic wave-like pattern.

Now, to sketch the graph using a different coordinate system, we need to understand how the new coordinate system differs from the usual Cartesian coordinate system (x-y axis). There are a few different coordinate systems we could use, but for the purpose of this explanation, let's use polar coordinates.

In polar coordinates, instead of using x and y values, we use an angle (θ) and a distance (r) from the origin. The angle represents the direction in which the point is located and the distance represents the distance from the origin. The origin is represented as (0,0) in Cartesian coordinates, but in polar coordinates, it is represented as (0,0) or simply as the pole.

To graph the equation (x-2y)=sin(pi(x+y)) in polar coordinates, we need to convert it into polar form. We can do this by substituting x=rcos(θ) and y=rsin(θ) into the equation. This gives us:

(rcos(θ)-2rsin(θ))=sin(pi(rcos(θ)+rsin(θ)))

Now, we can simplify this equation to:

r(cos(θ)-2sin(θ))=sin(pi(cos(θ)+sin(θ)))

This equation represents a spiral-like graph with a periodic wave-like pattern. To sketch this graph, we can plot points by choosing different values for θ and r. For example, when θ=0, the equation simplifies to r=0, which means the point is located at the pole (0,0). When θ=π/2, the equation simplifies to r=1, which means the point is located at a distance of 1 unit from the pole in the direction of π/2.

By plotting more points and connecting them, we can sketch the graph of (x-2y)=sin(pi(x+y)) in polar coordinates. It will look like a spiral with a periodic wave-like pattern.

I hope this explanation helps you understand how to use