What is Cross Product?

Cross Product — 术语表

An operation on two 3D vectors producing a vector perpendicular to both, with magnitude equal to the parallelogram area they span.

技术细节

Cross Product calculations are a source of common errors: a price increase from $100 to $150 is a 50% increase, but returning from $150 to $100 is a 33.3% decrease. Percentage points differ from percentages: an interest rate moving from 2% to 3% is a 1 percentage point increase but a 50% relative increase. In computing, floating-point arithmetic can introduce rounding errors — JavaScript's 0.1 + 0.2 = 0.30000000000000004. Use integer arithmetic (cents, basis points) for financial calculations.

示例

```
Logarithm identities:

  log_b(x) = y  means  b^y = x

  log₁₀(1000) = 3   (10³ = 1000)
  log₂(256)   = 8   (2⁸ = 256)
  ln(e)       = 1   (e¹ = e ≈ 2.718)

  log(a × b) = log(a) + log(b)
  log(a / b) = log(a) - log(b)
  log(a^n)   = n × log(a)
```

相关术语

Cross-Reference Table Mean Median Standard Deviation Percentile Logarithm Factorial Fibonacci Sequence Prime Number GCD LCM Matrix Determinant Permutation Combination Derivative Integral Pythagorean Theorem Radians Modular Arithmetic Correlation Eigenvalue Exponential Fourier Transform Variance Mode Regression Probability Distribution Normal Distribution Sigmoid Function Interpolation (Math) Dot Product Big O Notation Boolean Algebra Euler's Number Pi Complex Number Set Theory Bayes' Theorem Cross-Posting Taylor Series Gradient Monte Carlo Method Least Squares Entropy (Information) Hamming Distance Newton's Method Z-Score Binomial Distribution

Categories

Cross Product

技术细节

示例

相关工具

相关术语