特殊符号_符号表现
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-: minus(negative负的)*: multiplied by ÷: divided by =: be equal to ≈: be approximately equal to(): round brackets(parenthe)[]: square brackets {}: braces ∵: because ∴: therefore ≤: le than or equal to ≥: greater than or equal to ∞: infinity LOGnX: logx to the base n xn: the nth power of x f(x): the function of x dx: diffrencial of x x+y: x plus y(a+b): bracket a plus b bracket closed a=b: a equals b a≠b: a isn't equal to b a>b : a is greater than b a>>b: a is much greater than b a≥b: a is greater than or equal to b x→∞: approches infinity x2: x square x3: x cube √ ̄x: the square root of x 3√ ̄x: the cube root of x 3‰: three peimill n∑i=1xi: the summation of x where x goes from 1to n n∏i=1xi: the product of x sub i where igoes from 1to n ∫ab: integral betweens a and b 数学符号(理科符号)——运算符号 1.基本符号:+ - × ÷(/)2.分数号:/ 3.正负号:±
4.相似全等:∽ ≌ 5.因为所以:∵ ∴
6.判断类:= ≠ < ≮(不小于)> ≯(不大于)7.**类:∈(属于)∪(并集)∩(交集)8.求和符号:∑ 9.n次方符号:¹(一次方)²(平方)³(立方)⁴(4次方)10.下角标:₁ ₂ ₃ ₄
ⁿ(n次方)
(如:A₁B₂C₃D₄ 效果如何?)11.或与非的“非”:¬
12.导数符号(备注符号):′ 〃 13.度:° ℃ 14.任意:∀ 15.推出号:⇒ 16.等价号:⇔
17.包含被包含:⊆ ⊇ ⊂ ⊃ 18.导数:∫ ∬
19.箭头类:↗ ↙ ↖ ↘ ↑ ↓ ↔ ↕ ↑ ↓ → ← 20.绝对值:| 21.弧:⌒
22.圆:≰ 11.或与非的“非”:¬ 12.导数符号(备注符号):′ 〃 13.度:° ℃ 14.任意:∀ 15.推出号:⇒ 16.等价号:⇔
17.包含被包含:⊆ ⊇ ⊂ ⊃ 18.导数:∫ ∬
19.箭头类:↗ ↙ ↖ ↘ ↑ ↓ ↔ ↕ ↑ ↓ → ← 20.绝对值:| 21.弧:⌒ 22.圆:≰
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Α Β Γ Γ Δ Ε Ζ Θ Η Κ ∧ Μ Ν Ξ Ο ∏ Ρ ∑ Τ Υ Φ Φ Χ Ψ а б в г д е ѐ ж з и й к л м н о п р с т у ф х ц ч ш щ ъ ы ь э ю я
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я
°;';″分别是度;分;秒。
1°=60';1'=60″ ;1°=3600″ 1481562256