IGCSE Math

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Last updated 8:40 AM on 4/27/26
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16 Terms

1
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Simple interest

I = P x r x n

→ F = I + P

2
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Compound interest

F = P x ( 1 + r/100 ) ^n

3
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Arithmetic sequence (+d)

Un = dn + b

4
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Geometric sequence ( x r )

Un = U1 x r ^(n-1)

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Difference method

Un = a + bn + cn² + dn³

U1 = a + b + c + d

🔺1 = b + 3c + 7d

🔺2 = 2C + 12d

🔺3 = 6d

6
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Perpendicular line

-1/m

7
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Trapezium properties

One pair of parallel sides

8
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Axis of symmetry

-b/2a

9
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Interior angle of a polygon

(n-2) x 180 / n

10
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Directly proportional

y = kx

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Indirectly proportional

y = k/x

12
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Vector magnitude

|( )| = x2+y2\sqrt{x^2+y^2}

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S

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15
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16
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