> For example, my neighbor in California - he had an ability to look at an equation and actually visualize the plot of it like a graphing calculator This actua

> For example, my neighbor in California - he had an ability to look at an equation and actually visualize the plot of it like a graphing calculator This actually isn’t too hard for common functions if you know a few simple rules. Polynomials, quadratics, trig functions, exponentials, logarithmic functions, and rational functions are pretty easy to do this for.