Question 1

What equations can I graph?

Accepted Answer

You can graph polynomial functions (x², x³), trigonometric functions (sin(x), cos(x)), exponential functions (e^x), logarithmic functions (ln(x)), and combinations of these using standard mathematical notation.

Question 2

How do I enter equations correctly?

Accepted Answer

Use * for multiplication (2*x not 2x), ^ for exponents (x^2), and standard function names: sin(), cos(), tan(), sqrt(), log(), ln(). Use parentheses for clarity: sin(2*x) not sin2x.

Question 3

What are domain and range in graphing?

Accepted Answer

Domain is the set of valid x-values (inputs) for a function. Range is the set of resulting y-values (outputs). The graph window (x-min, x-max, y-min, y-max) controls which portion of the function you view.

Question 4

Why does my graph look incorrect?

Accepted Answer

Common issues: using degrees when the function expects radians, incorrect operator precedence (use parentheses), or viewing window too small/large. Try adjusting the axis range or rewriting the equation with explicit parentheses.

Graphing Calculator