Scientific & Graphing Calculator

Click the digital keys or type directly with your physical keyboard. The calculator supports basic operations, trigonometry, logarithms, exponents, and more. Press Enter or click the = button to evaluate your expression.

Check your angle mode (DEG vs RAD) for trigonometric functions, verify your parentheses are balanced, and ensure you're using the correct operator precedence. The calculator follows standard mathematical order of operations.

DEG mode means angles are interpreted in degrees, where a full circle is 360 degrees. Use this mode for most geometry and trigonometry problems where angles are given in degrees.

RAD mode means angles are interpreted in radians, where a full circle is 2π radians. This is the default mathematical mode and is used for calculus, advanced mathematics, and physics problems.

Click the 'DEG/RAD' toggle button on the calculator interface. The active mode is displayed on the screen. Switching modes changes how trigonometric functions (sin, cos, tan) interpret their input.

Click sin(, cos(, or tan( then enter your angle and close the parentheses. For example, sin(45) in DEG mode returns 0.707. Ensure your angle mode matches your problem (degrees or radians).

Use log( for base-10 logarithms and ln( for natural logarithms (base e). For logarithms with other bases, use the change-of-base formula: log_a(b) = ln(b)/ln(a).

Enter fractions as division: 3/4 for three-quarters. Use parentheses for complex fractions: (2+3)/(4+5). The calculator evaluates division with standard operator precedence.

Use the ^ operator for exponents, e.g., 2^3 for 2 cubed. Use sqrt( for square roots, cbrt( for cube roots. For other roots, use exponentiation: x^(1/n) for the nth root.

Enter numbers in scientific notation using 'e' notation, e.g., 6.02e23 for Avogadro's number or 2.998e8 for the speed of light. The calculator supports very large and very small numbers.

Enter a number followed by the ! operator. For example, 5! calculates 5 × 4 × 3 × 2 × 1 = 120. Factorials are only defined for non-negative integers.

Use the formula: nPr = n!/(n-r)! for permutations and nCr = n!/(r!(n-r)!) for combinations. The calculator supports factorial (!) which you can use to compute these values.

Yes, for evaluating expressions numerically. Switch to the Formula Solvers tab for dedicated quadratic equation solving, Pythagorean theorem solving, and circle geometry calculations.

Yes, switch to the Graphing tab. Enter an equation containing 'x' (like x^2 - 4 or sin(x)), set the viewing window ranges, and the canvas plots the function interactively.

Essential functions include: sin, cos, tan (trigonometry), log, ln (logarithms), ^ (exponents), sqrt (roots), ! (factorials), parentheses (grouping), and the ability to switch between DEG and RAD angle modes.

Switch to the Graphing tab, type your function in terms of 'x' (e.g., sin(x), x^2 - 4, 2*x + 1), and the canvas renders the curve. Adjust the x-min, x-max, y-min, and y-max ranges to zoom or pan the view.

The current graphing panel supports one equation at a time. You can quickly switch between equations using the preset buttons or manually enter different functions to compare their shapes.

The x-intercepts occur where f(x) = 0. The y-intercept is f(0). Hover over the graph to trace coordinates. For precise intercepts, solve the equation f(x) = 0 using the Formula Solvers tab.

Enter a quadratic like x^2 - 5*x + 6 or use the preset button. The graph shows a parabola. The Formula Solvers tab can also solve for the roots of any quadratic equation ax^2 + bx + c = 0.

Enter functions like sin(x), cos(2*x), or tan(x). Use the preset buttons for quick examples. The angle mode (DEG/RAD) affects how the function is displayed. Use RAD mode for standard mathematical graphs.

Yes, adjust the x-min, x-max, y-min, and y-max range values to zoom in or out. Narrower ranges provide a closer look at specific areas, while wider ranges show the overall function behavior.

Hover or tap on the graph to trace coordinates near peaks and valleys. Zoom in on the area of interest for better precision. The vertex of a parabola (quadratic) can be found at x = -b/(2a).

The current graphing tool focuses on standard function plotting. For inequalities, consider the function as a boundary and test points on either side to determine which region satisfies the inequality.

The tool graphs standard continuous and discontinuous functions. For piecewise functions, you can graph each piece separately by entering the relevant expression for each domain range.

Check that your equation uses 'x' as the variable, parentheses are balanced, and your viewing window ranges include the area of interest. Verify there are no syntax errors in your function.

Switch to the Formula Solvers tab and choose the appropriate solver. Enter the known values and the tool calculates the unknowns. Available solvers include quadratic equations, Pythagorean theorem, and circle geometry.

Yes, use the Quadratic Solver in the Formula Solvers tab. Enter coefficients a, b, and c from the equation ax² + bx + c = 0. The solver displays both roots and the discriminant.

The current solvers handle single equations. For simultaneous equations, you can solve one equation for a variable and substitute into the other, or use the standard calculator for numeric evaluation.

The Pythagorean and Circle solvers show step-by-step breakdowns of each calculation. The Quadratic solver displays the discriminant and roots. For general algebra, the main calculator evaluates expressions with full order of operations.

Use inverse operations: addition/subtraction undo each other, multiplication/division undo each other, and exponents/roots undo each other. The formula solvers handle specific cases automatically.

Yes, the calculator handles fractions natively. Enter fractions as division (e.g., 3/4). The formula solvers work with decimal equivalents of fractions.

Yes, the calculator supports the ^ operator for exponents. The quadratic solver handles powers naturally, and the circle solver includes π in area and circumference calculations.

The Formula Solvers tab includes quadratic equations (ax² + bx + c = 0), Pythagorean theorem (a² + b² = c²), and circle geometry (radius, diameter, circumference, area).

Check for syntax errors: unbalanced parentheses, missing operators between terms, or unrecognized functions. Ensure variables are lowercase 'x' and numbers use decimal points, not commas.

Yes, the calculator evaluates expressions and the solvers check equation solutions. Use the tool to verify your work by comparing results. Remember to understand the process, not just the answer.