anonymous
  • anonymous
The table below gives selected values for the function f(x). Use a trapezoidal estimation, with 6 trapezoids to approximate the value of the integral from 1 to 2 of f of x, dx. Give 3 decimal places for your answer.
Calculus1
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
https://gyazo.com/0c664bbb486e2332ed456ba2ddaef650
anonymous
  • anonymous
@terenzreignz Wanna see who can finish it first?
terenzreignz
  • terenzreignz
I hate this kind of problem -_-

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More answers

anonymous
  • anonymous
Almost done anyways ;p
terenzreignz
  • terenzreignz
OS was lagging on my end. But sure, you can have this one :)
anonymous
  • anonymous
I was gonna win either way
terenzreignz
  • terenzreignz
How typically like you to challenge me to unfair games :D
anonymous
  • anonymous
I got 19.6
terenzreignz
  • terenzreignz
Is it 7.4?
terenzreignz
  • terenzreignz
Oh. My bad :D
anonymous
  • anonymous
Did you just guess?
terenzreignz
  • terenzreignz
No. I calculated.
anonymous
  • anonymous
How'd you get 7.4?
terenzreignz
  • terenzreignz
Trapezoidal rule. What's the correct answer?
anonymous
  • anonymous
I don't know, I'm not given the answer.
anonymous
  • anonymous
Leme cheat using my calculator skilz
anonymous
  • anonymous
You were right
anonymous
  • anonymous
God damn it
anonymous
  • anonymous
roughly 7.36
anonymous
  • anonymous
Either my method was wrong or I simply miscalculated.
terenzreignz
  • terenzreignz
Maybe next time, you'll think twice before challenging me >:)
anonymous
  • anonymous
I don't get how
terenzreignz
  • terenzreignz
How did you know I was correct if you don't know how to do it?
anonymous
  • anonymous
I did the same thing as always and still ending up with 19.6
terenzreignz
  • terenzreignz
Why don't you show me what you did?
anonymous
  • anonymous
My calculator
anonymous
  • anonymous
Will a pic of my work do?
terenzreignz
  • terenzreignz
sure.
anonymous
  • anonymous
https://gyazo.com/b6b38482bd80bb2a7c46b00d994ba200
terenzreignz
  • terenzreignz
Typos, galore. It seems this is the summation you did: \[\Large \sum_{n=1}^6 x_n\Delta f(x_n)\] Whereas this is what you should have done: \[\Large \sum_{n=1}^6 f(x_n)\Delta x_n\]
anonymous
  • anonymous
Can you by any chance show me your work?
terenzreignz
  • terenzreignz
No... it was done in my head :( But let me try to expound what you did was this \[\Large \left[\frac{\color{blue}{1+1.1}}{2}\right][\color{red}{3-1}]+\left[\frac{\color{blue}{1.1+1.3}}{2}\right][\color{red}{5-3}]...\] When what you should have done was this: \[\Large \left[\frac{\color{red}{3+1}}{2}\right][\color{blue}{1.1-1}]+\left[\frac{\color{red}{5+3}}{2}\right][\color{blue }{1.3-1.1}]...\]
anonymous
  • anonymous
Ok, got it.

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