Find the 4-lx-3l domain of the function y = root Y = absolute value of 4 - (x-3) under root sign The absolute values of 4 - (x-3) are all under the root sign

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• 1. If y = lx-3l + L5 + XL, then the minimum value of Y is
• 2. The range of function y = f (x) defined on R is [a, b], and the range of Zehnder function y = f (x-1) is [a, b]
• 3. The volume of the conical container is? 1? When the fan-shaped iron sheet with a central angle of 216 degrees and a radius of 5 is enclosed?
• 4. Replace X in (1 + 8%) x with specific value, and explain the meaning of the algebraic formula
• 5. The sum of circumference, diameter and radius of a circle is 9.28 cm. The diameter of the circle is () and the area is ()
• 6. There is a regular n prism with 22 faces, and the sum of the lengths of all the side edges is 10 cm, and the side length of the bottom area is 5 cm
• 7. It is known that f (COS α) + F (- cos α) = 4sin α cos α, and | α | ≤ π / 2 (1) Find the values of F (0) and f (1); (2) Find the analytic expression of F (x); (3) Find the maximum of F (x)
• 8. As shown in the figure, the power supply voltage remains unchanged, R1 = R2 = R3 = 3 Ω, when the switch S1 is closed, S2 is open, and the indication of the ammeter is 2A (1) When S1 and S2 are both disconnected, the current through each resistor and the power consumed by R1; (2) When S1 and S2 are closed, the total resistance of the circuit and the heat generated by R3 in one minute
• 9. Make sentences with dashes of various meanings Dash has a lot of meaning, say the meaning, and then use a variety of meaning to make a sentence
• 10. F1F2 is the left and right focus of the ellipse, the line L passing through F2 intersects the ellipse at two points AB, the inclination angle of L is 60, the distance from F1 to L is 2, and the focal length of the ellipse is 3
• 11. Y = lx-1l + lx-3l (Note: sign of two absolute values) find the range = 2X-4, x > 3 (this equation is miscellaneous?) = 4-2x, x < 1 (same question!) = 2,1 I mean, we know that the range is 2, positive infinity. Ask the two formulas in the variational equation? 2X-4 and 4-2x
• 12. The range of X + 2 under y = LX + 1L + radical
• 13. If 1 ＜ x ＜ 2, simplify L1 XL + lx-2l
• 14. How to find the monotone decreasing interval of function y = | x + 3 |? RT. better be more detailed
• 15. A function is an increasing function in one interval and a decreasing function in another interval, and a constant value is obtained
• 16. 1. If f (x) is known to be a decreasing function on R, then f (L1 / XL) is satisfied
• 17. Function y = cosx in interval__________ The interior is a decreasing function
• 18. Let the image of function f (x) = LX + 2L + LX al be symmetric with respect to the line x = 1, then the value of a is? Urgent method idea!
• 19. Given 2x-1 | 3-1 > x-5-3x | 2, find the maximum and minimum of | x + 1 | - | x + 3 |
• 20. Given 2x − 13 − 1 ≥ x − 5 − 3x2, find the maximum and minimum of | X-1 | - | x + 3 |