I want check my answer

Q 1 : If the second term = 6 and fifteenth = 25 of sequence find the first term ?

Printable View

- Jan 31st 2010, 10:58 AMr-soyI want check my answer
I want check my answer

Q 1 : If the second term = 6 and fifteenth = 25 of sequence find the first term ? - Jan 31st 2010, 11:06 AMskeeter
- Jan 31st 2010, 11:08 AMe^(i*pi)
No, because you haven't answered the question fully. You've been asked to find the first term

*a*but you found the common difference*d*.

Your working seems fine though. Simply sub your value of d into one of your original equations to find a.

(eq1)

(eq2)

Rearrange eq1:

(eq3)

sub eq3 into eq2

- Jan 31st 2010, 11:59 AMr-soy
thanks

- Jan 31st 2010, 12:07 PMe^(i*pi)