Given the function f (x) = 2sinxcos (x + Pie / 6) - cos2x + m when x (x) The minimum value of M is - 3

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• 2. The equation for finding the line L is that the line L passes through the point (1,0) and the angle between the line L 1: root 3x + y-root 3 = 0 is 30 degrees What do you do when k doesn't exist
• 3. Z = sin (XY) + xiny for the partial derivatives of X and Y respectively
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• 5. As shown in the figure, the area of a point a on the image of the inverse scale function and the rectangle ABCD enclosed by the coordinate axis is 8, then the relation of the inverse scale function is___ ．
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• 9. If the area of the triangle formed by the function y equals two-thirds of minus x plus B and the coordinate axis is 12, then B =?
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• 11. Cut some rectangular pieces of paper 3cm in length and 2cm in width. At least several pieces of paper are needed to make a square. What is the relationship between the side length of a square and the length and style of the rectangle?
• 12. Find ∫ ln (e ^ x + 1) / e ^ x DX
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• 14. Let the population x obey the normal distribution x ~ n (μ, σ ^ 2), and x1, X2,..., xn be a sample from the population, Let u = [√ n (x - μ)] / σ, then d (U)=（
• 15. The side length of a square is equal to the diameter of a circle. It is known that the perimeter of the square is 20cm. How many square centimeters is the area of the square larger than that of the circle?
• 16. If lgx = 3.1502, what is x equal to?
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