this post was submitted on 20 Apr 2024
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[–] [email protected] 33 points 4 months ago (4 children)

The path of a bullet is parabolic. You ain't hitting shit with that math, yo.

[–] [email protected] 44 points 4 months ago

At that range, using a linear estimation is fine I assure you

[–] [email protected] 9 points 4 months ago

Both linear linear and parabolic descriptions of a bullet trajectory are approximations of a drag curve, that can be obtained only numerically.

[–] [email protected] 1 points 4 months ago

On short distance you do

[–] [email protected] 1 points 4 months ago

That's just what they want you to think

[–] [email protected] 15 points 4 months ago

Define x motherfucker

[–] [email protected] 9 points 4 months ago (2 children)

Serious question: is x = my + b also a slope intercept? Why is it only calculated via the y axis?

[–] [email protected] 16 points 4 months ago (1 children)

It’s convention, I think. If I remember correctly, you always put y on the left, because you can also write equations as functions of a variable, x, with the symbology f(x) = mx + b. That way you can integrate and derive the function easily, since m and b are constants, and all your x variables are on one side.

If I were to encounter x = my + b, the first thing I would do, just by nature at this point, would be to convert it to y = (x - b) / m.

It’s been a while since I took math, and I was never the best, so others should feel free to correct me.

[–] [email protected] 3 points 4 months ago

Correct. Y is a response to X. How does y change as x changes? If I need to achieve this y, what does my x need to be? By convention, y is the dependent variable and x is the independent variable, m is slope, and a, b, c are constants.

[–] [email protected] 2 points 4 months ago

I'm not a mathematician but if I recall correctly slope is defined the change in y over the change in x. In your formula solved for x, m would represent the inversion of that, the change in x over the change in y.

[–] [email protected] 8 points 4 months ago (1 children)

....... I may have 3am brain, but the intercept is y=b....

Slope intercept formula???

That's a formula for a line, y intercept is x=0...

[–] [email protected] 3 points 4 months ago

yup, slope intercept is the name of the formula. m is the slope of the line and b is still the y intercept.

[–] [email protected] 7 points 4 months ago

Shit is affine, yo

[–] [email protected] 4 points 4 months ago

Pull the trig-ger

[–] [email protected] 4 points 4 months ago

Rise over Gun

[–] [email protected] 1 points 4 months ago

Ok, but what's the quadratic formula?

[–] [email protected] 1 points 4 months ago

Or you can take it's derivative at that point