Question

Pattern A : 1,3,5,7 .
Pattern B : 1 ,9,25,49

Determine the general formula for the nth term of pattern A .

Hense determine the general formula for pattern B​

Answer 1

Step-by-step explanation:

for A

$an = a1 + (n - 1)d \\ d = a2 - a1 \\ d = 3 - 1 = 2 \\ an = 1 + (n - 1) \times 2$

for B

$an = a1 + (n - 1)d \\ d = a2 - a1 \\ d = 9 - 1 = 8 \\ an = 1 + (n - 1) \times 8$