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AP Calculus AB/BC
The term sqrt(x^2 + 1) represents a mathematical expression where x is squared, then 1 is added to it, and finally takes the square root of this sum.
Radical Function: A radical function contains radicals (√) in its equation.
Quadratic Function: A quadratic function involves squaring an unknown variable.
Exponential Function: An exponential function involves raising a base number to an exponent.