Function The images of the linear function y = 2 / 3x + m and y = - 2 / x + n pass through a (- 2,0) and intersect with y axis at B and C. the height of the edge AC of triangle ABC is obtained
Y = 2 / 3 x + m, passing point a (- 2,0), 0 = 3 / 2 × (- 2) + m, M = 3, y = 2 / 3 x + 3, intersecting with y axis at point B, Yb = 3, coordinate of point B (0,3) y = - 1 / 2 x + N, passing point a (- 2,0), 0 = - 1 / 2 × (- 2) + N, n = - 1, linear equation y = - 1 / 2 x - 1, that is: x + 2Y + 2 = 0b point to straight line y = - 1 / 2 x - 1
RELATED INFORMATIONS
- 1. The following information about a certain function is provided: For a function, the following information is provided: (1) Its image is a straight line (2) The line passes through three points (0,0), (1, - a), (a, - 4) (3) The value of function y decreases with the increase of independent variable x Find the expression of the function
- 2. Please write a function analytic expression that meets the following two conditions___ ① In the second quadrant, y increases with the increase of X
- 3. There are 3500 bicycles and mopeds parked in a large bicycle parking spot on a Sunday. The storage fee for mopeds is 2 yuan for each bicycle and 1.2 yuan for each bicycle (1) If the number of bicycle parking is x, and the total income of storage fee is y yuan, try to write the function of y about X; (2) If it is estimated that the number of mopeds is not less than 25% but not more than 40% of the 3500 vehicles coming to park, try to find out the range of the total amount of daily income storage fees of the parking station Need specific process
- 4. My mother said to me, "I'm working overtime today. You'll go to grandma's after school."
- 5. A worker produced a batch of parts. On the first day, he produced part of the parts, and the ratio of the number of finished parts to the number of unfinished parts was 3:4. On the second day, he produced another 52 parts. At this time, the number of finished parts was 4 times of the number of unfinished parts. How many parts were produced on the first day?
- 6. Xinhua bookstore has a batch of books, one fourth of which are sold in the morning and three seventh of which are sold in the afternoon. A total of 380 books have been sold. How many of these books are there Equations and formulas
- 7. 1+12+(13+23)+(14+24+34)+… +(150+250+350+… +4850+4950).
- 8. He has many books
- 9. Look at the next three lines -3,9,-27,81... 1,-3,9,-27... -2,10,-26,82... Let x, y and Z be the number of rows 1, 2 and 3 respectively, and find the value of X + 6y + Z. what is the relationship between the number of rows 2, 3 and the number of rows 1
- 10. English translation
- 11. The analytic expressions of the function y = KX + B are determined according to the following conditions (1) When x = 5, y = 6 (2) Line y = KX + B passes through points (3,6) and points (1 / 2, 1 / 2) ————————————————————————————
- 12. How to find B in the expression of definite function
- 13. Second grade mathematics to determine the function expression There are two points a (0,3) and B (4,1) on the image of the function. Find the expression of this linear function.
- 14. Finding function expression Given that the function f (x) f '(x) = KF (x) + b k < 0, f (0) = 0, f' (0) = 3 is the tangent slope of (0, 0), and the asymptote of F (x) is y = 2, can we find f (x)
- 15. Finding the expression of the original function Given that G (cosx) = TaNx, find GX. My method is to deform TaNx, and then get GX = radical 1-x ^ (2) / radical x, but the teacher was wrong,
- 16. Given line L and line y = 2x + 1, the expression of line L is determined according to the following conditions (2) Line L passes through point a (- 1, - 5) It is known that the line L is parallel to the line y = 2x + 1
- 17. Determine the expression of the line according to the following conditions A straight line passes through points m (1, - 3), and the abscissa of its intersection with X axis is 6
- 18. If an image has such characteristics, its function expression can be obtained Draw the maximum and minimum points of sine curve y = SiN x, and connect the two adjacent maximum and minimum points with line segments to form a sawtooth shaped image. What is its function expression?
- 19. According to the following conditions, the expressions of the corresponding quadratic functions are obtained respectively 1. The image of known quadratic function passes through a (0, - 1) B (1,0) C (- 1,2) 2. It is known that the vertex of parabola is (1, - 3) and intersects with y axis at (0,1) 3. It is known that the parabola intersects the x-axis at (- 3,0) (5,0) and the y-axis at (0, - 3) 4. It is known that the vertex of the parabola is (3, - 2) and the distance between the two intersections of the parabola and the X axis is 4
- 20. Finding function expression Let f (x) = AX2 + BX + C pass through points (0,1) and (1,4), and the inequality f (x) ≥ 4x holds for any real number X ① Find the expression of function f (x); ② Let g (x) = KX + 1, if f (x) = log2 (g (x) - f (x)) is an increasing function in the interval [1,2], find the value range of real number K