How to calculate the area of parabola and straight line with definite integral The parabola y = the square of X and the straight line y = 2x form the figure and area from 0 to 2

∫ (0,2) [the square of 2x-x] = [the square of X - the third power of X / 3] (0,2) = 4 / 3

RELATED INFORMATIONS

1. Primary school fifth grade mathematics exercise book (1) 45 answers
2. Hyperbola 16x ^ 2-9y ^ 2 = 144, the left and right focal points are F1F2 respectively, the point P is on the hyperbola and ∠ f1pf2 = 60 ° to calculate the area of △ f1pf2
3. What is the third grade of primary school
4. Find the equation of the circle whose center C is on the straight line x + 2Y + 4 = 0 and passes through two points a (- 1,1), B (1, - 1)
5. (1) 14700-14700 △ 28 + 825; & nbsp; & nbsp; & nbsp; & nbsp; (2) (3400 + 2856 △ 84) △ 34
6. As shown in the figure, two identical right triangles are stacked together to find the area of the shadow part. (unit: cm)
7. Given the image of quadratic function y = AX2 + BX + C, we try to explain the symmetry axis of this function image when x = 2 through a (0, a) B (1, - 2A) It is known that the image of quadratic function y = AX2 + BX + C passes through a (0, a) B (1, - 2A) (1) Try to explain the symmetry axis of this function image when x = 2; (2) Based on the available information, can you find the analytic expression of quadratic function in the title? (1) Ask already know
8. Third grade math problem with 24 side length is 1 cm small square put together into a rectangle, this rectangle circumference is how many centimeters?
9. How to find the instantaneous velocity of the first point How to find the instantaneous speed of the first point in a certain period after the learning clock in grade one of senior high school?
10. As shown in the figure, the radius of the fan-shaped paper is 15cm, the center angle is 120 ° and it is used to make the side of a cone model. Calculate the height and side area of the cone (regardless of the loss at the joint, the result retains the root sign)
11. What is the formula of standard deviation, covariance and correlation coefficient
12. When we ask the value of M, the equation x & # 178; - 2mx + 2m + 3 = 0 has two negative numbers
13. The difference of negative power with or without brackets
14. Given the solution of the quadratic equation AX ^ 2 + BX + C = 0 about x? You have already answered the answer to this question, but can you tell us the detailed process, thank you. We know that the two univariate quadratic equations ax ^ 2 + BX + C = 0 about X are α and β, and the two equations x ^ 2 + (α + 1) x + β ^ 2 = 0 and x ^ 2 + (β + 1) x + α ^ 2 = 0 about X have a unique common root, so we can find the relationship of a, B and C The answer might be - B / a = - 2 / 5, C / a = - 3 / 25
15. Why is 1 divided by 10 equal to 0
16. It is known that in the hyperbola X & # 178 / 9-y & # 178 / 16 = 1, a and B are the left and right vertices of the hyperbola, and the line L passing through point a is perpendicular to the X axis, Next: find the trajectory equation of the right vertex of the hyperbola and the point with the same distance from the straight line L For the benefit of both sides, the copy has been proofread,
17. Do you want to write the multiplication formula of the whole ten times one digit? () × () = () × () = () x () = 120
18. As shown in the figure: it is known that the midpoint a (a, b) point B (a, 0) in the plane rectangular coordinate system satisfies | 2a-b | + (B-4) 2 = 0 (1) (2) given point C (0, b), point P starts from point B and moves at a speed of 1 unit per second in the negative direction of x-axis. At the same time, point Q starts from point C and moves at a speed of 2 units per second in the negative direction of y-axis. At a certain time, as shown in the figure, and s yin = 12s quadrilateral ocab, the moving time of point P is calculated? (3) Under the condition of (2), AQ intersects the x-axis at m, makes the angle bisector of ∠ ACO and ∠ AMB intersects at point n, and judges whether ∠ n - ∠ APB - ∠ PAQ ∠ AQC is a fixed value. If it is a fixed value, calculate the value; if not, explain the reason
19. Does the abacus mental arithmetic in grade one of primary school only include addition and subtraction
20. Finding a monotone increasing interval of F (x) = SiNx ^ 2