rumus matematik tambahan

3472/2 Rumus-rumus berikut boleh membantu anda menjawab soalan. Simbol-simbol yang diberi adalah yang biasa digunakan. The following formulae may be helpful in answering the questions. The symbols given are the ones commonly used. ALGEBRA − b ± b 2 − 4ac 2a

1.

x =

2.

am × an = am + n m

n

m−n

log c b log c a

8.

log a b =

9.

Tn = a + (n − 1)d

10.

Sn =

11.

Tn = ar n − 1

n {2a + (n − 1)d } 2

3.

a ÷a = a

4.

(am)n = am n

5.

loga mn = loga m + loga n

12.

Sn =

a ( r n − 1) a (1 − r n ) = , r ≠1 r −1 1− r

6.

loga

m = loga m − loga n n

13.

S∞ =

a , |r|