![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A junior high school quadratic function judgment! The quadratic function y = - AX2 (2 is exponential) is known. When x < 0, the symmetry axis of y = - AX2 (2 is exponential) is Y axis Is this question right or wrong? Why?
Wrong!
The images of x < 0 and x > 0 are symmetrical
Just X
RELATED INFORMATIONS
- 1. Critical questions! Urgent The volume of a cylinder is two thirds larger than that of a cone The larger the volume of a cone, the larger its base area The sector chart reflects the relationship between the part and the total The unit price of the subscription is inversely proportional to the number of copies When the ratio of a to B is 5:4, the number of a is 25% more than that of B
- 2. The questions are as follows: Dalian ushered in the dawn before Xi'an 2. When the sun is directly on the equator, it is winter in the northern hemisphere All meridians are of equal length, and the equator is the longest of the latitudes The direction of the earth's revolution is just opposite to that of its rotation The center of the earth's rotation and revolution is the earth's axis
- 3. The image of positive scale function passes through (- 2, - 3), and the analytic expression of this function is
- 4. Given that the image of a positive scale function passes through the point m (- 1,5), find the analytic expression of this function?
- 5. The image of positive scale function passes through M (- 1,5), the analytic expression of this function
- 6. The analytic expression of a positive scale function image is obtained through points (2,4) and (m, M + 5) The image of a positive scale function passes through points (2,4) and (m, M + 5) (1) to find the analytic expression of the function. (2) to find the value of M
- 7. Given that the image of positive scale function passes through points (- 2,4) and (m, - 8), the analytic expression of the function and the value of M are obtained Such as the title, December 11 kneel before the request, I have, even if the wood
- 8. Given that the points (3, m-1) and (m, 2) are all on the image of a positive scale function, find the value of M 2, and find the analytic expression of the positive scale function
- 9. As shown in the figure, it is known that the image of the inverse scale function Y1 = K1X and the image of the primary function y2 = k2x + B intersect at two points a and B, and a (2, n), B (- 1, - 2). (1) find the relationship between the inverse scale function and the primary function; (2) use the image to write directly when x is in what range, Y1 > Y2
- 10. As shown in the figure, it is known that the image of inverse scale function y = K1 / 2x and the image of linear function y = k2x + B intersect at two points a and B, a (2, n), B (- 1, - 2) 2) When what is the value of X, the value of the first-order function is greater than that of the inverse proportion function? 3) find the area of △ AOB
- 11. The judgment of quadratic function in the third grade of junior high school If you look at the image of y = x, which of the following judgments is correct A. If a and B are opposite to each other, then the function values of x = A and x = B are equal B. For the same independent variable x, there are two function values corresponding to it C. For any real number y, there are two X's corresponding to it D. For any x, there is Y > 0
- 12. A quadratic function judgment problem! If b > A + C, then ax & sup2; + BX + C = 0 has two unequal real roots How can this sentence be proved right or wrong? Online kneeling for the emperor of mathematics! It is better to give the process of proof
- 13. Positive proportion function in mathematics of grade two
- 14. Deformation of positive proportion function Is the positive proportion function y = KX (k is not equal to 0), and after deformation, k = Y / X (k is constant and not equal to 0) a positive proportion function? If so, its definition and range have changed
- 15. The definition of positive proportion function
- 16. How to judge inverse proportion function
- 17. Several areas of inverse proportion function
- 18. Inverse scale function
- 19. The distance is not proportional to the time!
- 20. Why is it wrong and right (1) The distance is proportional to the time (2) The edge length of a cube is proportional to its volume (3) 40% of a and B. A and B are in direct proportion (4) The base of a parallelogram is 8 cm. Its area is proportional to its height Are the above four judgment questions right or wrong` Why is it wrong and why is it right`` (3) A is 40 percent of B. A and B are in direct proportion. （ ） I wrote the third question wrong last time