The number of intersections between the image and the X axis of the function f (x) = x * LG (x + 2) - 1 is ()

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• 1. How many intersections are there between the image of function y = x ^ 2-3 / X-1 / - 1 and X axis
• 2. 1. Function y = - x2 + X-1 how many intersections are there between image and X axis 3. The vertex coordinates of the function y = - 1 / 2 (x + 1) 2 + 2 are 4. According to the following conditions, find the analytic expression of quadratic function. (1) the image passes through points (1, - 2), (0, - 3), (- 1, - 6); (2) When x = 3, the function has a minimum value of 5 and passes through points (1,11); (3) The function image intersects the x-axis at two points (1 - √ 2,0) and (1 + √ 2,0), and intersects the y-axis at (0, - 2)
• 3. Function f (x) = 1 + X + x ^ 2 / 2 + x ^ 3 / 3?
• 4. The number of intersections between the image and the x-axis of the function f (x) = 13x3-x2-3x-1 is______ One
• 5. The coordinates of the intersection a of the image of function y = 3x + 1 and X axis are, and the coordinates of the intersection B of function y = 3x + 1 and Y axis are
• 6. The number of intersections between the image of function f (x) = 1 / 3x ^ 3-x ^ 2-3x-1 and X axis
• 7. Given the function f (x) = lgx, how to draw the image of the function g (x) = f (1-x)?
• 8. Given the function f (x) = lgx, the image of the function g (x) = │ f (1-x) │ is approximately
• 9. The range of function f (x) = | lgx 2-lgx | (x > 0) |1 lgx| In the title (| lgx 2-lgx |) and (| 1 lgx |) are aligned, similar to the appearance of the matrix, which is in an absolute value
• 10. The image of the function f (x) lg1-x / 1 + X is symmetric about the point
• 11. The number of intersections of the graph of function y = f (x) and x = 2 () A. 0 B. 1 C. 0 or 1 D. not sure
• 12. The set composed of the intersection points of the images of the linear function y = x + 3 and y = - 2x + 6 is () A. {4，1}B. {1，4}C. {（4，1）}D. {（1，4）}
• 13. Find function definition field y = log3 [Log1 / 3 (log3x)]
• 14. On the graph of the function y = 3 ^ X and y = Log1 / 3 1 / X_ symmetric On the graph of the function y = 3 ^ X and y = Log1 / 3 1 / X____ symmetric
• 15. If f (x) is defined as a function on R, and f (10 + x) = f (10-x), f (20-x) = - f (20 + x), it is proved that f (x) is an odd function and periodic function
• 16. Y = f (x) is defined in R, and its graph is symmetric with respect to the straight line x = A and x = B (a is not equal to b). It is proved that f (x) is a periodic function
• 17. The even function y = f (x) decreases monotonically in the interval [0,4]. Compare the sizes of F (- 1), f (3 / π), f (- π)
• 18. Among the following functions, the function that is both even and monotonically increasing on the interval (0, + infinity) is A,y=x∧-1.B,y=log2x.C,y=|x| D,y=-x∧2
• 19. Among the following functions, the function which is both even and monotonically decreasing on the interval (0,1) is () A. y=1xB. y=lgxC. y=cosxD. y=x2
• 20. If the even function y = f (x) decreases monotonically in the interval [0,4], then a f (- 1) > F (one third) > F (- 1) > b f (one third) > F (- 1) > F (- 1) > C f (- 1) > F (one third) > d f (- 1) > F (- 1) > F (one third) > F (one third)