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sergeinik [125]
3 years ago
7

HEY I NEED HELP W AN AP CALC AB QUESTION ASAP

Advanced Placement (AP)
2 answers:
AlexFokin [52]3 years ago
7 0

Answer:

Explanation:

So the limit of the sum of that function was equal to 21/2 (work attached).

Now after solving the other integrals, we get the first is equal to 8 after solving, the second is equal to 39/2, the third is equal to 25/2, and the last one is equal to 21/2 (our answer). So \int\limits^5_2 {(x)} \, dx is our answer.

DanielleElmas [232]3 years ago
6 0

Answer: The answer is option 4. \int\limits^2_5 {x} \, dx

Explanation: It comes from simple observation. We get from the expression that

\Delta x=\frac{b-a}{n}, then \Delta x=\frac{3}{n} in the expression given.

From that we get how much is, i.e.,    b-a = 3, and also

f(a+i\cdot \Delta x )=(2+ i \cdot \frac{3}{n} ),

which shows us that the function is      f(x)=x\\   and the initial value a=2,

the only option from the possibilities that fulfills all of it is the option number 4, that is

\int\limits^2_5 {x} \, dx

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