EDEXCEL MATHS A LEVEL PURE LATEST UPDATE QUESTIONS WITH 100% CORRECT ANSWERS.

EDEXCEL MATHS A LEVEL PURE LATEST UPDATE
QUESTIONS WITH 100% CORRECT ANSWERS.

differentiate tan(kx)

ksec^2(kx)




differentiate cos(kx)

-ksin(kx)




differentiate sin(kx)

kcos(kx)




arithmetic sequence

un = a + (n - 1)d




arithmetic series

sn = n/2 (a + d)




geometric sequences

un = ar^n - 1




geometric series

sn = a(r^n - 1) / r - 1

, sum to infinity

a/1 - r




convergent series

sn closer to 0




divergent series

sn further away from 0




sigma notation




recurrence relationship

defines each term as function of last



un + 1 = f(un)




increasing recurrence relationship

un + 1 > un




decreasing recurrence relationship

un + 1 < un




radians: arc length