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Hey: Exercise 11(b), Question 25, Fitzpatrick 2U: The sum of the first six terms of an arithmetic sequence is -12 and the sum of the first fourteen terms is 196. Find: a) the sum of n terms. b) the smallest value of n if the sum is to exceed 250. Thanks for any help i can get.

yes, thankyou.

Thanks, should have been clear to me earlier, but what got me was the variables in denominator.

Hey, wondering if I may possibly get help for this question: Q24) solve, 1<(4x-4)/(2x+3)<3 I can solve rational inequalities, its just this one is a double inequality.

This thread was merely a matter of curiosity anyway.

Do you get marked down in the HSC for using the notation 'cscx' instead of 'cosecx'? I just find it neater and could possibly save some space when writing.