Mathwords F Face of a Polyhedron Factor of an Integer Factor of a Polynomial Factor Theorem Factor Tree Factorial Factoring Rules Falling Bodies Fibonacci Sequence Finite First Derivative First Derivative Test First Order Differential Equation First Quartile Five Number Summary Fixed Flip Floor Function Focal Radius Foci of an Ellipse Foci of a Hyperbola Focus Focus of a Parabola FOIL Method Formula Fractal Fraction Fraction Rules Fractional Equation Fractional Exponents Fractional Expression Frequency of a Periodic Function Frequency of Periodic Motion Frustum of a Cone or Pyramid Function Function Operations Fundamental Theorem of Algebra Fundamental Theorem of Arithmetic Fundamental Theorem of Calculus New TermsFactored FormFrequency TableFunction NotationFundamental Counting PrincipleFuture Value