Given the function f (x) = (K-2) x + (4-3k), when x ∈ [- 1,1], the image of function f (x) is always above the x-axis, then the value range of K is____
This is a linear function, as long as the function values at the end of the interval are greater than 0
That is: F (- 1) > 0, f (1) > 0
If f (- 1) = 2-k + 4-3k = - 4K + 6 > 0, then: K0, then: K
RELATED INFORMATIONS
- 1. Given that the image of the first-order function y = half x-3 is parallel to the straight line and passes through (- 1,3), the function relation is obtained
- 2. A straight line is parallel to the image of the first-order function y = half x-3, and the focus of the image of the first-order function y = 2x + 1 is on the Y axis
- 3. Given that the image of a function of a degree passes through point a (2, - 1) and point B, where point B is the intersection point of another straight line y = negative half x + 3 on the Y axis, the function of a degree can be obtained Find the expression of this first-order function!
- 4. If the image of a linear function is parallel to the straight line y = 12x − 1, the intersection points with the x-axis and y-axis are a and B respectively, and pass through the points (- 1, - 5), then the points on the line AB (including the end points a and b) whose abscissa and ordinate are integers are () A. Four B. five C. six D. seven
- 5. Quick! On the image of the first-order function y = half x + half, get the coordinates of the point whose distance from the Y axis is 1
- 6. Given that the point P is on the image of the linear function y = - X-1, and the distance to the X axis is 2, the coordinates of P are obtained
- 7. Given the function f (x) = f '(π 4) cosx + SiNx, then the value of F (π 4) is______ .
- 8. Given the function f (x) = f '(π 4) cosx + SiNx, then the value of F (π 4) is______ .
- 9. Find the maximum value of function f (x) = SiNx + cosx + SiNx * cosx
- 10. Given the function f (x) = f '(π / 2) SiNx + cosx, then the value of F (π / 2) is Sorry, wrong. F (x) = f '(π / 2) SiNx + cosx. It's derivative
- 11. Given the function y = MX2 - (M + 1) x + 1 (M is a real number), this paper explores the fixed-point coordinates through which the image of the function passes for any real number M
- 12. Given the function y = MX2 + (M-3) X-1, at least one intersection of image and x-axis is on the right side of the origin, finding the range of real number M
- 13. If the image of the function y = 2|1-x | + m has a common point with the X axis, then the value range of M is______ .
- 14. If the image of the function y = (1 / 2) ^ | 1-x | + m has a common point with the X axis, then the value range of M is?
- 15. For a linear function y = (M + 4) x + 2m-1, if y increases with the increase of X, and the intersection of its image and Y axis is below X axis, try to find the value range of M
- 16. 1. If the image of the function y = (2m + 3) x + (3N + 1) passes through the positive half axis of the X and Y axes, then the values of M and N are?
- 17. In order to make the image of function y = (2m-3) x + (3N + 1) pass through the positive half axis of X and Y axes, the values of M and n should be () A. m>32,n>-13B. m>3,n>-3C. m<32,n<-13D. m<32,n>-13
- 18. If the intersection of two images is one, then M =? I just have some points~ If we know that the intersection point of two images of the linear function y = 2x + m and y = 3x + 2m is one, then M =?
- 19. Given that the image of the first-order function y = (M-3) x + 2m + 4 passes through the intersection point P of the straight line y = negative 1 / 3x + 4 and the Y axis, find the surface of the triangle formed by the two function images and the X axis most urgent!
- 20. In order to make the image of function y = (2m-3) x + (3N + 1) pass through the positive half axis of X and Y axes, the values of M and n should be () A. m>32,n>-13B. m>3,n>-3C. m<32,n<-13D. m<32,n>-13