Math Tools

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线性回归详解

线性回归原理公式代码实现完全指南 NEW 🌳

决策树算法详解

决策树ID3/C4.5/CART原理与实现 NEW 🌲

随机森林详解

随机森林集成学习原理与调参指南 NEW 📐

SVM 支持向量机详解

SVM核函数超平面分类原理与实现 NEW 📍

KNN 算法详解

K近邻算法原理距离度量与实现 NEW ⬇

梯度下降详解

梯度下降SGD/Adam优化器原理 NEW 🎯

K-Means 聚类详解

K-Means原理肘部法则轮廓系数 NEW 🚀

XGBoost 详解

XGBoost梯度提升原理调参与实战 NEW ∑

Mean, Median & Mode

Compute mean, median & mode ∑

Standard Deviation

Calculate population & sample SD ∑

Variance Calculator

Calculate population & sample var ∑

Correlation Coefficient

Pearson/Spearman correlation 📈

Regression Analysis

Linear regression & prediction 🎲

Probability Calculator

Independent/conditional probability ∑

Bayes' Theorem

Bayesian posterior probability 🎲

Permutations & Combinations

Calculate C(n,r) and P(n,r) 📐

Matrix Addition

Matrix addition & subtraction 📐

Matrix Multiplication

Matrix multiplication operation 📐

Matrix Determinant

Compute square matrix determinant 📐

Matrix Inverse

Compute invertible matrix inverse ∫

Derivative Rules

Derivative & chain rule reference ∫

Integral Rules

Indefinite & definite integral rules ∞

Limits Reference

Limit formulas & L'Hopital's rule 🔢

Prime Factorization

Factor integers into primes 🔢

GCD & LCM Calculator

Calculate GCD and LCM 🔢

Modular Arithmetic

Modular operations & modular inverse 🔢

Number Sequences

Arithmetic/geometric/Fibonacci gen 📐

Area Formulas Reference

Common geometry area formulas 📐

Volume Formulas Reference

Common solid volume formulas 📐

Trigonometry Reference

Trig function table & formulas 📐

Coordinate Geometry

Line, circle & distance formulas 🌊

Fourier Transform

Fourier transform formulas 🌊

Laplace Transform

Common Laplace transform pairs 📐

Quadratic Equation Solver

求解ax²+bx+c=0的实数根和复数根 📊

Statistics Calculator

Mean/median/SD all-in-one calc 📉

Z-Score Calculator

Z-score & normal distribution 🔢

Permutation & Combination

Calculate P(n,r) and C(n,r) 📐

Vector Calculator

2D/3D vector dot & cross product 📐

Trigonometry Calculator

Sin/cos/tan & inverse trig calc 🔢

Logarithm Calculator

Natural, common & custom base log 📐

Polynomial Operations

Polynomial add/multiply/factor ⭕

Unit Circle Reference

Trig function unit circle lookup ∫

Calculus Formulas

Derivative & integral formulas 📊

Linear Algebra Guide

Matrix, determinant & eigenvalue 🔢

Number Bases Guide

Binary/octal/hex conversion theory 🎲

Probability Guide

Classical & conditional probability 📐

Geometry Formulas

Triangle/circle/polygon formulas 📊

Financial Math Guide

PV/FV/IRR calculation principles 🔢

Set Theory Guide

Union/intersection/Venn diagrams 💻

Boolean Algebra Guide

Logic operations & truth tables 🕸

Graph Theory Basics

Directed graphs & path algorithms 🔢

Scientific Calculator

Advanced calculator with sin/cos/log NEW 📐

Quadratic Equation Solver

求解一元二次方程并画图 NEW 📐

Quadratic Equation Solver

求解ax²+bx+c=0并绘制图像 NEW 📊

Poisson Distribution

Poisson probability calculator NEW