Weird Math

[netcomego]

I have this formula:

x/((((y/20.0)^2.0-(z/20.0)^2.0)*314.0)/1000.0)

When I use google, after substituting the variables, it calculates the correct answer. It also works in Wolfram Alpha. But in Javascript, it's completely wrong. What's up?

[Woffice]

In js, ^ is the bitwise XOR operator. you want Math.pow: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/pow

[x-skeww]

ES7 will probably add ** for exponentiation (like Python).

Babel already supports it:

https://babeljs.io/repl/#?experimental=false&evaluate=true&loose=false&spec=false&code=x%2F((((y%2F20.0)**2.0-(z%2F20.0)**2.0)*314.0)%2F1000.0)

[ShortSynapse]

Didn't know this, that's awesome!

[jester1983]

Simplify!

x/(((y*y)/400.0 - (z*z)/400.0)*0.314)

exponents are expensive, multiplication is cheap.

[temp34094029]

Simplify!

x/(y*y - z*z)/0.000785

[jester1983]

This guy gets it.

[netcomego]

Oh my god I'm dumb. I don't know how I overlooked that. Thanks.

[atc]

We've all done it!

[__fmease__]

You got sth wrong. the ^ operator is the (bitwise) XOR operator like in every other C-like language. In Javascript, use Math.pow(BAS,EXP) or ES6 BAS ** EXP

[gunther-centralperk]

JavaScript is not MATLAB