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numbers and algebraic expressions
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function and its properties
linear function
quadratic function
polynomials
rational function
exponential function
logarithm
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trigonometry
plane geometry
analytic geometry
solid geometry
combinatorics
probability
elements of statistics
kropki game

The exponential function with base a * 0 and a ≠ 1: y = a^x. For a * 1 exponential function is strictly increasing. Examples: y = 3^x, y = 5^x, y = (2 1/2)^x. For 0 * a * 1 exponential function is strictly decreasing. Examples: y = (1/2)^x, y = (2/3)^x, y = (0,4)^x. Properties of exponential function: domain: D = R. Image: ZW = (0, ∞). Zeros: lack. A graph of any exponential function contains point (0, 1) on y-axis. The exponential function is injective.