Find the range y = - 2cos ^ 2x + 2sinx + 3 / 2, X ∈ [- π / 4, π / 4]

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• 1. The range of y = x squared + 2x / 3 squared - 4 is
• 2. Find the range: y = x square - 2x - 2 / 5 (- 2)
• 3. Find the range. ① y = 2sinxcos ^ 2x / 1 + SiNx; ② y = Tan ^ 2x - TaNx + 1 / Tan ^ 2x + TaNx + 1
• 4. The range of function y = (tan-1) / (TaNx + 1) is
• 5. The range of y = log2 (the square of X - 4x + 6)
• 6. Find the range y = log2 (square of X + 4x + 5)
• 7. Monotone interval of y = log2 {4x-x square}
• 8. Find the range of y = Log1 / 2 (x ^ 2 + 2x + 5)
• 9. Find the range of function y = Log & nbsp; 12 (- x2-2x + 3)
• 10. Find the range of function FX = - x2 + 2x + 3 (- 2 ≤ x ≤ 3)
• 11. The range of y = 2cos (2x + π / 3) + 1, X ∈ [0, π / 2]
• 12. Find the range of y = (x2-2x-3) / (2x2 + 2x + 1) The range of y = (x2-2x-3) / (2x2 + 2x + 1) (2 after X means square)
• 13. The range of x2-2x-3 / 2x2 + 2x + 1
• 14. Let x1, X2 be the two real roots of the equation x2 + PX + q = 0, and X1 + 1, X2 + 1 be the two real roots of the equation x2 + QX + P = 0 about X, then P=______ ，q=______ ．
• 15. The root ratio of x ^ 2 + PX + q = 0 is 1:2, and the discriminant value is 1. Find the value of PQ and solve the equation
• 16. The solution of the equation PX + 8q = 333 of X is 1, and P, q are prime numbers, P
• 17. p. If q is prime and the equation x ^ 2-px + q = 0 has a positive integer root, then p =, Q=
• 18. If P is prime and both of the equations x2 + px-444p = 0 are integers, then p=______ ．
• 19. The solution of the equation PX + 8q = 333 of X is 1, and P and Q are prime numbers,
• 20. In the equation 15x40x-15x24x = 750x2, the large x multiplier and the small X are unknowns~