BIG MATHS DUMP

Find the sum of all integers between 1 and 200 that are not multiples of 9

Five consecutive terms of an arithmetic sequence have a sum of 40. The product of the first, middle, and last term is 224. Find the terms of the sequence

the sum of first three terms of a convergent infinite geometric series is 19. The sum of the series is 27. Find the first term and the common ratio

the second term of a convergent infinite geometric series is 8/5. The sum of the series is 10. Show that tere are two possible series, and find the first term and the common ratio in each case.

Head minus tail rule

AB = b - a

vector notations

turn into du/dx

b