Math: Calculus

posted by .

Estimate the area under the graph of f(x)=x^2+2x from x = 4 to x = 10 using 3 approximating rectangles and left endpoints.

I got 290.25 as my answer but it's wrong. Would someone explain to me how to answer this question.

  • Math: Calculus -

    what is f(x) at x=4,6, 8

    area=f(4)*2+f(6)*2 + f(8)*2

    that is three rectangles of width 2, height to f(x)(left end point).

    How in the world would you estimate to five digits of precision. "estimate"

    f(4)=24
    f(6)=48
    f(8)=80

    estimate: you do it. Twice the sum of those numbers.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Calc

    Estimate the area under the graph of f(x)= x^2 + 2 x from x=4 to x=10 using 3 approximating rectangles and left endpoints.
  2. Calculus

    Estimate the area under the graph of f(x) = 2x^3 + 3 from x= -1 to x=5, first using 6 approximating rectangle and right endpoints, and then improving your estimate using 12 approximating rectangles and right endpoints. When using the …
  3. Math: Calculus

    Estimate the area under the graph of f(x)=3x^3+5 from x=-1 to x=4, first using 5 approximating rectangles and right endpoints, and then improving your estimate using 10 approximating rectangles and right endpoints. I'm having problem …
  4. Calculus

    Set up a Riemann sum to estimate the area under the graph of f(x) = 5x 2 + 2 between x = 0 and x = 1 using 3 subdivisions and left endpoints. Draw the graph and the 3 rectangles
  5. Calculus-Approximate areas

    Estimate the area under the graph of f(x)= x^2 + 3 x from x=1 to x=10 using the areas of 3 rectangles of equal width, with heights of the rectangles determined by the height of the curve at a) left endpoints: b) right endpoints:
  6. Calculus

    a) Estimate the area under the graph of f(x)=7+4x^2 from x=-1 to x=2 using three rectangles and right endpoints. R3= ?
  7. Calculus Help Please Urgent!!!

    a) Estimate the area under the graph of f(x)=7+4x^2 from x=-1 to x=2 using three rectangles and right endpoints. R3= ?
  8. Calculus

    Estimate the area under the graph of f(x)= x^2 + 2 x from x=1 to x=5 using 4 approximating rectangles and left endpoints.
  9. calc

    a) Estimate the area under the graph of f(x) = 10(sqrt(x)) from x = 0 to x = 4 using four approximating rectangles and right endpoints
  10. Calculus

    Estimate the area under the graph of f(x)=cos((pi/4)x) from x=-2 to x=2 using 3 rectangles of equal width, using left and right endpoints.?

More Similar Questions