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The number of roots of the equation LNX = x Λ 2-4x + 4 is
2
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- 1. It is known that f (x) = lnx1 + X − LNX, and f (x) has the maximum value at x = x0. The correct sequence numbers in the following expressions are: ① f (x0) < x0; ② f (x0) = x0; ③ f (x0) > x0; ④ f (x0) < 12; ⑤ f (x0) > 12 A. ①④B. ②④C. ②⑤D. ③⑤
- 2. If f (xn) = LNX, then the value of F (2) is () A. ln2B. 1nln2C. 12ln2D. 2ln2
- 3. F (2x) = LNX, f (x) = lnx-ln2, how does the first step change into the second step!
- 4. The three-dimensional figure of () besieged city of the cuboid
- 5. The unfolded drawing of a cuboid may not be able to encircle the cuboid,
- 6. As shown in the figure is the expansion of a cuboid, calculate the surface area and volume of the enclosed cuboid. (unit: decimeter)
- 7. Use 96cm long wire to encircle a rectangular frame. The ratio of length, width and height of the cuboid is 5:2:3. How many centimeters are the length, width and height of the cuboid
- 8. Use 24 cm long wire to circle the learned plane figure. Which figure has the largest area?
- 9. Use three 6.28-meter-long iron wires to encircle the city, rectangular, square and round. Which figure has a large area? Let's make it clear
- 10. Find the area of the plane figure surrounded by the following curve X = √ X and the line y = 0, x = 1, x = 2
- 11. The number of real roots of equation LNX + 2x-8 = 0 is () A. 0B. 1C. 2D. 3
- 12. F (x) is an odd function defined on R, x > 0 is, f (x) = x + LNX, the number of real roots of the equation f (x) = 0 Multiple choice, just give me an answer
- 13. The number of roots of equation (1 / 2) ＾ x = LNX
- 14. The number of real roots of the equation x + LNX = 0 is
- 15. Find the value of limx ^ LNX when x tends to 0
- 16. Limx * LNX / (x * x + 2) x tends to be positive infinity
- 17. Y = LNX, the area of the figure enclosed by the straight line x = 3 and X axis, please help to list the formula (calculated by definite integral) After feedback from many friends, the definite formula = ∫ lnxdx is the interval integral from 3 to 1. I want to know how to find the intersection point 1
- 18. The calculation of the area of the plane figure enclosed by the positive metaphysical curve y = SiNx and the x-axis on [0, π]
- 19. The area of a figure enclosed by a curve y ^ 2 = x and a straight line x = 1?
- 20. Let the plane figure d be bounded by the square of the curve y = x, the straight lines X = 1 and y = 0, and find the area s of D