Question

Help with riemann sum notation medals!!

Answer 1

this is a more interesting version of what you had before, but the concept is still the same.

Answer 2

this pellet looks complicated

Answer 3

yeah i tried to go ahead and factor it out and got (5/n)((3k-9)/n)

Answer 4

you want to make this as easy as possible, so take out a 5/n from the sum, and you are left with a sum with f(a+deltax),

Answer 5

you didn't factor that correctly, there is no 1/n left over inthe sum

Answer 6

sheeit

Answer 7

it is only 3 deltax - 9

Answer 8

set a as -9, b as 14

Answer 9

I was thinking of setting a as -9 but wouldn't b-a equal 23

Answer 10

oops, I done goofed

Answer 11

yah dun dun it

Answer 12

set b = -4, a =-9

Answer 13

-4-(-9)=13

Answer 14

no, -4-(-9)=-4+9=5

Answer 15

god damn i typed it into my calculator incorrectly, wasn't paying attention. i dun goofed

Answer 16

so f(x) is?

Answer 17

Ah, I'm sorry, let me revise again haha. to make this even easier, factor 3 out again from the sum and youre left with
3(5k/n-3) so set "a" to -3, "b" to 2

Answer 18

then the f(a+x) is just 3x :D

Answer 19

don't factor it OUT of the sum, but factor it from the expression you are summing (had to clarify)

Answer 20

bueno