![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Ask a mathematical problem of quadratic function. About taking the maximum and minimum If the maximum value of square + 2x + a of quadratic function y = x (0 is greater than or equal to X is less than or equal to 1) is 3, Then a is equal to?
The formula is y = (x + 1) 2 + A-1, the symmetry axis of the image is x = - 1, the opening is upward, so when x = 1, the maximum value of Y is 3 + A, so a = 0
RELATED INFORMATIONS
- 1. Find the maximum or minimum of the following quadratic functions: （1）y=x²+10x-7 （2）y= -x²+3x+2 （3）y=（1/5）x²-2x+3 （4）y=（-2/3）x²+2x-6
- 2. If (x ^ 2 + y ^ 2) (x ^ 2 + y ^ 2-1) - 12 = 0 and X, y are real numbers, then x ^ 2 + y ^ 2 =?
- 3. Given that X. y is a real number and satisfies (square of X + square of Y) x (square of X + square of Y -- 1) = 12, find the value of square of X + square of Y
- 4. Factoring the square of 4-12 (X-Y) + 9 (X-Y)
- 5. 4 plus 12 times (X-Y) plus the square of 9 (X-Y)
- 6. The square of 4-12 (Y-X) + 9 (X-Y)= The square of x-xy-5x + 5Y= The square of ab-5bc-2a + 10ac= The square of X - 6xy + the square of 9y - the square of 4A= 1-4m square - 9N square + 12mn= The square of T - 13T + 42= The square of x-8x-33=
- 7. (y + 1): 4 = (x + 2): 3 2x-3y = 1, find the solution of X and y
- 8. If 2 / x = 3 / y = 4 / Z, then 3 / y is 2x + y-z= emergency
- 9. If 3 / 3 x = 2 / 2 y = 5 / 5 Z, then X-Y + Z is 2x-3y-z=
- 10. Solving the system of linear equations with three variables {2x-3y = - 16 y-3z = - 2 3x + Z = - 4}
- 11. Let a and B satisfy a3b + ab3-2a2b + 2ab2 = 7ab-8, then A2-B2 = () A. 1b. 3C. 5D. Not sure
- 12. A math problem in junior high school (algebra) Let a, B, C satisfy a ^ 2 + B ^ 2 + C ^ 2 = 1, and prove that one of | A-B |, | B-C |, | C-A | must not exceed √ 2 / 2 (2 / 2 of the root sign)
- 13. A math problem (algebra problem) If Mn is a real number and one root of the equation x ^ 2 + MX + n = 0 is four times of the other root, then the relationship between M and N is () A.4m²+25n=0 B.2n²+25=0 C.4m²-25n=0 D.4n²-25n=0
- 14. Mathematics (algebra) (X2-x+1)6=a0x12+a1x11+a2x10+… +a12, Ask for: （1） a0+a1+a2+… +a12 （2） a0+a2+a4+… +a12 Note: X is followed by the power, a is followed by the number in the lower right corner
- 15. If x and Y in Z = 2x + y satisfy the constraint conditions x-2y + 5 > = 0; 3-x > = 0; X + Y > = 0, then the minimum value of Z is
- 16. (Science) if x and y satisfy the constraint condition x ≥ 0 x + 2 y ≥ 32 x + y ≤ 3, then the minimum value of Z = X-Y is______ ．
- 17. If x > 0, Y > 0 and X + 2Y = 3, then the minimum value of 1 / y + 1 / y is 0
- 18. Let X and Y belong to R, x ^ 2 + 2Y ^ 2 = 6, then the minimum value of X + y is
- 19. Given that X and Y belong to R + and X + 2Y = 1, find the minimum value of 1 / x + 1 / Y and the value of X and y when the minimum value is obtained
- 20. If x and Y belong to R +, 1 / x + 1 / y = 2, find the minimum value of X + 2Y