#integration

82 messages · Page 1 of 1 (latest)

undone lion
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am i doing it all wrong can i do it all in one go like the limits im kinda lost as i have a negative value for this positive area. Xx

IMG_2962.jpg IMG_2961.png
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<@&791435371564892232>

uneven coral
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looks good i think

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the second integral you got there will be negative but you've accounted for it by subtracting the two integrals instead of adding them so good job

undone lion
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UGHHH IVE GOT IT WRONG

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apparently the answer is 4

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but i got 28

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im confused

uneven coral
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@undone lion for the first one

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should be 1/4 (3^4) - 8(3) - 1/4 (2^4) + 8(2)

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sign error on the 8(2)

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same thing with the 8(1)

undone lion
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why is jt + huh

uneven coral
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so lets say im integrating f(x) and it gives me F(x) and my limits are x = a and x = b

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(x=a is the top limit)

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then when subbing in the limits i get this

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F(a) - F(b)

dawn light
undone lion
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Chat gpt says

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4

tacit carbon
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from the integral between 1 to 2 you get -4.25, you'd take the absolute value cuz it's beneath the x-axis and change this to 4.25

from the integral between 2 to 3 you get 8.25

adding these together you get 12.5

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if my explanation didn't make sense

undone lion
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That’s wrong

tacit carbon
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if you say so

undone lion
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WAIT WHY IS IT ADD

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FOR TOTAL AREA SURLEY ITS -

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<@&791435371564892232>

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Also how do u do B

uneven coral
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subtract line and curve equations

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then integrate

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with limits being the points of intersection

undone lion
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huh surely that’s part c

uneven coral
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oh i misread

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mb

undone lion
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Do u not just integrate it between 1 and 5

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Then for c do that

uneven coral
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can u see a trapezium

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formed by the line and those dotted lines

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find the area of that

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then essentially do what you do in part c

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then do trapezium area - answer to part c

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there's probably an easier way but my brain is too fried to think

undone lion
tacit carbon
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i wonder why those parts are reversed lol

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oh nvm

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b) is just integral of the curve and c) is trapezium - integral

undone lion
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what have I done wrong 😦 <@&791435371564892232>

IMG_2971.jpg
uneven coral
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ask oofy

tacit carbon
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you integrated the equated equation and not the curve equation

undone lion
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OHHH TYY UGH

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what’s the answer

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I got 33.333333

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@tacit carbon

tacit carbon
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idk

undone lion
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Can u find it out

tacit carbon
undone lion
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RLLU?

tacit carbon
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does your calculator have an integration function?

undone lion
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RLLY

tacit carbon
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cuz u can use that to check

undone lion
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ohh omg yes wait

tacit carbon
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if you're using the new ones it'll be in the catalog

undone lion
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How do I get to it

tacit carbon
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which model do you have?

undone lion
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991 ce

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CW

tacit carbon
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catalog -> func analysis -> integration

undone lion
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also why do we integrate graphs with y = surely it should be dy/dc

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Like

uneven coral
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what

undone lion
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@marhs mentoe

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like isn’t integration getting u from dy/dx to y

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but when u integrate y

uneven coral
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not necessarily

undone lion
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@tacit carbon

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huh

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im confused

uneven coral