Education & Math

Calculate the slope and intercept of a line through two data points (simple linear regression with n=2).

Determine whether two data points indicate a positive or negative linear relationship and its slope.

Calculate the derivative of a quadratic function at a given x value.

Calculate the definite integral of a quadratic function between two bounds.

Calculate the average rate of change of a function between two points.

Calculate the sum of the first n terms of a geometric series.

Calculate the sum of the first n terms of an arithmetic series.

Calculate the probability of exactly k successes in n independent trials.

Calculate the Poisson probability of observing exactly k events given an average rate λ.

Calculate the probability of a specific outcome occurring n times in a row.

Calculate the union and unique-only counts for two overlapping sets.

Calculate torque from horsepower and engine RPM using the standard automotive formula.

Calculate gear ratio and output speed from input speed and tooth counts.

Estimate speedometer error percentage from original versus new tire diameter.

Calculate total engine displacement from bore, stroke, and number of cylinders.

Calculate moles of product from moles of reactant and a balanced equation's mole ratio.

Calculate percent yield from actual and theoretical yield in a chemical reaction.

Simplify a two-element mole ratio by dividing by the smaller value (for empirical formula determination).

Convert a percentage grade to an approximate 4.0-scale GPA value using a common linear mapping.

Calculate reading speed in words per minute and estimated time to read a document.

Calculate typing speed in words per minute from character count and time.

Calculate attendance percentage and how many classes can still be missed before falling below a target.

Allocate available study hours proportionally across two subjects by weight or difficulty.

Calculate the number of moles from a mass and known molar mass.

Calculate pH from hydrogen ion concentration.

Calculate pressure using the ideal gas law PV = nRT.

Calculate total resistance for two resistors in series and in parallel.

Calculate the output voltage of a two-resistor voltage divider.

Calculate the energy stored in a capacitor from capacitance and voltage.

Calculate the time constant of an RC circuit from resistance and capacitance.

Calculate the resistor value needed to safely drive an LED from a supply voltage.

Calculate three-phase electrical power from voltage, current, and power factor.

Calculate sine, cosine, and tangent of an angle in degrees.

Calculate the third side of a triangle using the Law of Cosines from two sides and the included angle.

Calculate a missing side using the Law of Sines from a known side and two angles.

Calculate the determinant of a 2x2 matrix.

Calculate the dot product of two 2D vectors.

Calculate the horizontal range of a projectile launched at an angle (no air resistance).

Calculate the time for an object to fall a given height under gravity.

Calculate mean and population standard deviation for two values (for full datasets use the list statistics tool).

Calculate population variance for two values.

Calculate joint probability of two independent events both occurring.

Calculate a confidence interval for a sample mean given standard deviation and sample size.

Calculate the missing side and angles of a right triangle from two known legs.

Calculate the area of a trapezoid from its two parallel sides and height.

Calculate the area of a parallelogram from base and height.

Calculate the area of a regular polygon from side length and number of sides.

Calculate the arc length of a circle from radius and central angle.

Calculate the area of a circular sector from radius and central angle.

Calculate the distance between two points in 3D space.

Calculate the magnitude and direction angle of a 2D vector.

Calculate the vertex of a parabola y = ax² + bx + c.

Solve ax² + bx + c = 0 for real or complex roots.

Calculate the exact number of permutations nPr.

Calculate the exact number of combinations nCr.

Calculate the exact value of n factorial (n!).

Calculate the exact greatest common divisor of two integers.

Calculate the exact least common multiple of two integers.

Calculate the area and circumference of a circle from its radius.

Calculate triangle area from three side lengths using Heron's formula.