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常用數(shù)學(xué)符號(hào)大全

1 幾何符號(hào)
⊥ ∥ ∠ ⌒ ⊙ ≡ ≌ △
2 代數(shù)符號(hào)
∝ ∧ ∨ ~ ∫ ≠ ≤ ≥ ≈ ∞ ∶
3運(yùn)算符號(hào)
× ÷ √ ±
4集合符號(hào)
∪ ∩ ∈
5特殊符號(hào)
∑ π(圓周率)
6推理符號(hào)
|a| ⊥ ∽ △ ∠ ∩ ∪ ≠ ≡ ± ≥ ≤ ∈ ←
↑ → ↓ ↖ ↗ ↘ ↙ ∥ ∧ ∨ &; §
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
Γ Δ Θ Λ Ξ Ο Π Σ Φ Χ Ψ Ω
α β γ δ ε ζ η θ ι κ λ μ ν
ξ ο π ρ σ τ υ φ χ ψ ω
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ
ⅰ ⅱ ⅲ ⅳ ⅴ ⅵ ⅶ ⅷ ⅸ ⅹ
∈ ∏ ∑ ∕ √ ∝ ∞ ∟ ∠ ∣ ∥ ∧ ∨ ∩ ∪ ∫ ∮
∴ ∵ ∶ ∷ ∽ ≈ ≌ ≒ ≠ ≡ ≤ ≥ ≦ ≧ ≮ ≯ ⊕ ⊙ ⊥
⊿ ⌒ ℃
上述符號(hào)所表示的意義和讀法(中英文參照)
+ plus 加號(hào);正號(hào)
- minus 減號(hào);負(fù)號(hào)
± plus or minus 正負(fù)號(hào)
× is multiplied by 乘號(hào)
÷ is divided by 除號(hào)
= is equal to 等于號(hào)
≠ is not equal to 不等于號(hào)
≡ is equivalent to 全等于號(hào)
≌ is approximately equal to 約等于
≈ is approximately equal to 約等于號(hào)
< is less than 小于號(hào)
> is more than 大于號(hào)
≤ is less than or equal to 小于或等于
≥ is more than or equal to 大于或等于
% per cent 百分之…
∞ infinity 無(wú)限大號(hào)
√ (square) root 平方根
X squared X的平方
X cubed X的立方
∵ since; because 因?yàn)?br /> ∴ hence 所以
∠ angle 角
⌒ semicircle 半圓
⊙ circle 圓
○ circumference 圓周
△ triangle 三角形
⊥ perpendicular to 垂直于
∪ intersection of 并,合集
∩ union of 交,通集
∫ the integral of …的積分
∑ (sigma) summation of 總和
° degree 度
′ minute 分
〃 second 秒
# number …號(hào)
@ at 單價(jià)

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