Exponential function
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In mathematics, the exponential function is the unique real function which maps zero to one and has a derivative everywhere equal to its value. It is denoted e x or exp x ; the latter is pref
Complex exponential function graph horn shape xvw dimensions
Complex exponential function graph spiral shape yvw dimensions
Sine and cosine
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In mathematics, sine and cosine are trigonometric functions of an angle. The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the
Domain coloring of sin(z) in the complex plane. Brightness indicates absolute magnitude, hue represents complex argument.
Quadrant from 1840s Ottoman Turkey with axes for looking up the sine and versine of angles