/sci/ - Science & Math

>>11392262
freak
>>11394576
Yes. You can be shocked by a single phase at low voltage too. You can ever be shocked by DC. Have you really never been shocked before? Humans don't make great capacitors.
>>11395842
[math] R(x)=300x-x^2/20 [/math]. The maximum occurs when [math] R'(x)=300-x/10=0 [/math] so we get a maximum revenue at [math] x=3000~\text{units} [/math] of [math] 450,000~\text{dollarydoos}
[/math]. No graphing required. Just set the derivative of R(x) to zero. Elementary calculus, love.
>>11396159
If you're just studying, use this. https://www.geogebra.org/3d?lang=en Of course, you should know how to draw a level set.