maths.free › Algebra › Functions and graphs

Functions and graphs

Zeros, slope, symmetry — reading a graph from its formula.

A function is a rule that turns each input into one output; its graph draws every pair. From the formula you can find where it crosses the axis (zeros), how steep it is (derivative) and how it looks (the plot). Type any y = … to graph and analyse it.

Toimiva esimerkki: y = x^2 - 3

Algebra · Functions

Graph and analyse x^2 - 3

y = x^{2} - 3

Askel kerrallaan

  1. x^{2} - 3

    An expression in x. Here is what it does.

  2. x = - \sqrt{3}, x = \sqrt{3}

    Real zeros (where the graph crosses the axis).

  3. \frac{d}{dx} = 2 x

    Derivative (slope).

Paljasta vastaus
x^{2} - 3

Kokeile omaasi

Lisää Algebra

Linear equationsQuadratic equationsSystems of equationsInequalitiesFactoringExpandingSimplifying expressionsExponential and logarithmic equationsPolynomial equationsAbsolute value