nb + ( x1 + x 2 + ... + x n )m = ( y1 + y 2 + ... + y n )
2 2 ( x1 + x2 + ... + xn )b + ( x12 + x 2 + ... + x n )m = ( x1 y1 + x 2 y 2 + ... + x n y n )
1 d a b −1 and D = ad − bc ≠ 0 , then A = A= If c d D − c
− b . a
reff
r = 1 + − 1 m
m
1 − (1 + i ) − n P = R i
P = A(1 + i ) − n
R=
Si (1 + i ) n − 1
A = P(1 + i ) n
(1 + i ) n − 1 S = R i
A = P(1 + rt )
R= Pi 1 − (1 + i ) − n
I = Prt
i=
r m
n = mt