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Letters with mathematics: 9 steps

If you want to draw a sphere you can do it, it has a nice equation:

r ^ 2 = x ^ 2 + y ^ 2, where "r" means the radius of the sphere. [19659002] This equation is the direct meaning of the sphere, which is the points equivocal from the midpoint. You can check this by selecting a point on the circle line and computing with the Pythagorean theorem.

But now we only use these things for drawing, so let's play with our sphere a little.

Let's stretch it along the "x" axis and make an ellipse, but how? Just change the "x" part of the equation a bit: r ^ 2 = (x / a) ^ 2 + y ^ 2

The same also works on the other axis.

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