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Ephilo
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HELP PLEASE)..Estimate the area of the given function, f(x) = x2 + 1 using 4 inscribed rectangles on the interval [2, 4].
 one year ago
 one year ago
Ephilo Group Title
HELP PLEASE)..Estimate the area of the given function, f(x) = x2 + 1 using 4 inscribed rectangles on the interval [2, 4].
 one year ago
 one year ago

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Ephilo Group TitleBest ResponseYou've already chosen the best response.0
@mathsmind this one first tho
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
what i understand is that we have to integrate between 2 and 4
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
i am having some problems it says [Math Processing Error]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[int_{2}^{4} x^2 dx\]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
or is it about drawing estimating the area of the parabula using blocks of squares...
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
i dont know but this one is too hard :( its worth 7.0 pts im so confused, i feel like crying
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[int_{2}^{4} x^2 dx \]
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
this work is getting to hard for me
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
well you have to suffere the pain of knowledge and hardship for a better future, we all went through hard times ...
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
you should fight back and not let the questions beat you ...
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
i think this question is saying estimate the area using rectangles, on a proper sheet
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
so first of all we need to divid the interval
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
what i mean by that is to divide the interval into 4 sub inscribed intervals
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
let it be 2, 2.5, 3, 3.5 and 4 because they 2 and 4 are included in the interval using square brackets notation...
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
okay,i'm working on it
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
are you with me, this is the logic of the question from my understanding
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
I am sorry that the equation editor is not functioning propely for me, probably due to browser issue, or technical problem with open study...
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
A = 0.5[f(2)+f(2.5)+f(3)+f(3.5)+f(4)
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
i'm looking,i'm here trying to understand
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
so what is f(2)=?
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
now before that the reason why i divided the intervals by a step of 0.5 is due to the fact that dx = (42)/4=0.5, hence 2, 2.5...etc
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
let me help you on the first one f(2) = (2)^2+1=4+1=5
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
what is f(3)=?
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
what is f(2.5)=?
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
what is f(3.5)=?
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
and finally what is f(4)=?
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
give me a coplue mins as i work on finish another problem
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
i don't understand how you got the f(2)= part
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
ok i will solve it i am replying to 287489327498732987498237 posts at the same time ... hehehe
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
lol okay, i can't keep hogging you,ill be working on others as i wait.
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
now young lady, let's see what your problem is...
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
step one: dx = (42)/4 = 1/2=0.5
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
step two divide the interval [2, 4] into [2, 2.5, 3, 3.5, 4]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
step three find : A = 0.5[f(2)+f(2.5)+f(3)+f(3.5)+f(4)]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
f(2) =(2)^2+1=5, f(2.5)=(2.5)^2+1= 7.25. f(3)=(3)^2+1=10, f(3.5)=(3.5)^2+1=13.25, and f(4) = (4)^2+1=17
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
: A = 0.5[5+7.25+10+13.25+17]=? use the calculator
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
@Ephilo are you there...?
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
yes im writing it on paper
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
you need to understand what we did, it is a numerical integration method ....
 one year ago

Ephilo Group TitleBest ResponseYou've already chosen the best response.0
i understand
 one year ago
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