Question

Guys please help me..... I give medals

Answer 1

@freckles

Answer 2

@jim_thompson5910

Answer 3

@jim_thompson5910 please help me

Answer 4

they let

u = x+1

then they derived both sides with respect to x to get
du/dx = 1
du = 1*dx
du = dx

making sense so far?

Answer 5

yes

Answer 6

they only have true and false as possible answers

Answer 7

now focus on the limits of integration for that first integral
they are 3 and 5

if x = 3, then what is the value of u?

u = x+1

Answer 8

4

Answer 9

wait, is it 1/4?

Answer 10

idk how you're getting 1/4

Answer 11

but if x = 3, then u = 4, yes

Answer 12

if x = 5, then u=x+1=5+1 = 6

so the limits change from 3,5 to 4,6

Answer 13

hopefully this convinces you that the given equation is true

Answer 14

oh i see

Answer 15

yes they just converted the x into U values

Answer 16

yep u-sub

Answer 17

I get it now. Can you help me with one last one?

Answer 18

first graph y = x^3 - 3x^2 + 2x. What do you notice about it?

Answer 19

it has one max and one min

Answer 20

what are the roots?

Answer 21

0 1 2

Answer 22

x= 0,1,2