Created by Gurdev Manchanda
over 8 years ago


Question  Answer 
C1 Arithmetic Series : nth term  Un = a + ( n  1) d 
Arithemtic Series : sum  Sn = n/2 ( a + (n1) d 
Differentiation  y=x > dy/dx (derivative) > d2y/dx2 f(x) > f'(x) > f"(x) 1. power x coefficient 2. power 1 Gives estimate for gradient of tangent 
Integration  d2y/dx2> dy/dx (derivative) > y=x f"(x) > f'(x) > f(x) 1. power +1 2. coefficient/power 3. + C Gives equation of line 
Arithmetic Series: Sum using last term  Sn = n/2 (a+L) 
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