The exponential function has no restrictions: inputs can be real numbers or imaginary numbers. The parent function is either f(x) = ex or f(x) = 10x. Graph of the exponential parent functions f(x) = ex(red) and f(x) = 10x (black). Characteristics: Domain: (-∞, ∞). Range: ...
“myopia with astigmatism” could be described as ρ cos 2(θ). This description doesn’t quantify the aberration: in order to so that, you would need the complete Rx, which describes both the