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Exponential functions take the form of a^x, x ε R, a>0 when a is not equal to 1.
For graphs with a>1:
The function increases for all values of x (as x increases, so does the value of y.)
The function is always positive (it lies above the x axis.)
As à infinity, y à infinity. That is, the x-axis is an asymptote.
What happens when 0
