ID 2

symbol we use to solve questions in waec and neco exam

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(1) / means division or divide

Examples:

2/2 means 2/2

2 whole no 3/4 means 2¾

M=wp+(1/3)yp^2 means m=wp + ¾y2

(2) Log means logarithm

Example: (8) Log5 (base 8) means Log85

(3) * means multiplication

Example: 2*2 means 2x2

(4) ^ means Raise to power

Examples:

3^(-1) means 3-1

5^(2) means 52

30cm^(-2) means 30cm-2

(5) Tita means θ

Example: Tan tita means tan θ

(6) Pie means π

Example: Pie R sqr h means πr2h

(7) Base means subscript

Example: 2 Base 3 means A3

(8) Sqr root means √

Examples:

√3-√6+2√3 means Root 3-root6+2root 3

√(¾) means sqr root(3/4)

(9) bar means a dash on top a number of letter

Example: X bar means x̅

(10) ---(1) means equation 1

(11) Proportional means ∝

Example: R is proportional to 3/4rut m means R ∝ ¾

(12) Alpha means α

(13) Beta means β

(14) Gamma means γ

(15) cube root means ∛

(16) Mu means μ

(17) Rho means ρ

(18) Delta means δ

(19) Sigma means σ

(20) Tau means τ

(21) Ohm means Ω

(22) Lamda means λ

(23) Omega means ω

(24) Intersection means ∩

Example: B intersection C means B∩C

(25) Union means U

Example: B union C means BUC

(26) Factorial means !

(27) complements in sets means ‘

(28) (aq),(g),(l),(s) is used in chemistry to show the state of matter in equations

(29) Equivalent to means ≡

(30) Not equal to means ≠

(31) Quotation means “ ”

(32) Less or equal to means ≤

(33) Greater or equal to ≥

Example: (3/4)>=(1/2) means ¾ ≥ ½

(34) Plus or minus (or +-) means ±

Example: (3/4)<=(1/2) means ¾ ≤ ½

(35) Element of means ∈

Example: 2 belongs to X or 2 is a member of X means 2∈X

(36) Percent or percentage means %

(37) Degrees Fahrenheit means ℉

(38) Degrees Celsius means ℃

(39) Universal set means ξ or U

(40) Null or empty set means ∅ or {}

(41) (42) 2.S.F means 2 significant figures

(43) P=(2,3) means P={2,3} in sets

(44) Propotional to means ∝

(45) Therefore means ∴

(46) KNO(3)(s) means KNO3(s)

(47) NaCl=> Na^(+) + Cl^(-) means NaCl → Na++ Cl-

(48) Summation means Ʃ

(49) Parallel lines means ǁ

(50) Perpendicular lines means ˩

(51) Reversible equation means ↔

(52) Infinity means ∞

(53) Approximately means ~

(57) Approximately equal to ≅

Other Symbols

(1) File means ɸ

(2) Δ means Change or Triangle

(3) slope or differentiation means dy/dx or ∂y/∂x or δy/δx or Δy/Δx

(4) Parenthesis means …

(5) Naira means ₦

(6) Integral means ∫

(7) Almost equal to means ≈

(8) For all means ∀

(9) There exist means ∃

(10) Epsilon means ε

(11) Vertical dots means ⁞

Tables, Radiativity Diagrams

**Table1**

A table of this would be computer as follows

X:1,2,3,4

FX:4,6,8,10

F(X-Xbar):10,8,6,4

**Table2**

A table like this would be computed as follows

Particulars: maintenance,salaries &wages, Purchase of Drugs, total

Amount: 2500,1000,2000,5500

**Logarithm Table**

**Tabulate**

No:92.63, Log:1.9667

No: 2.914, Log: 0.4645

2.4312

Antilog = 269.9

Therefore 92.63*2.914=2.4312

**Radiativity Diagram**

**means**

(238)U(92)=>(234)Th(90) + (4)He(2)

This is computed as follows

(1)(-b± sqr rut(b^2-4ac))/2a

(2)Sqr root ((2Qh)/100)

(3)Xbar=Efx/ef

(4)Summation (n=1 to infinity )P(n)

(5)S.D= Sqr Rut ((Ef|x-xbar|^2))/Ef

(6)R is proportional to1/ sqr rut

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