What is the maximum value of x ^ 2 + y ^ 2 = 1,3x-4y?

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• 9. The image with positive scale function y = - 2x passes through the second step_________ In the quadrant, the function y increases with the increase of the independent variable x_______ It is known that the image of the linear function y = KX + 3 The image with positive scale function y = - 2x passes through the second step_________ In the quadrant, the function y increases with the increase of the independent variable x_______ It is known that if the image of a linear function y = KX + 3 passes through a point (- 1,2), then K=___________
• 10. For a linear function y = - 2x + 3, the value range of the independent variable X of its image in the first quadrant is? The answer is 0 ＜ x ＜ 3 / 2,
• 11. If x ^ 2 + y ^ 2 = 1, what is the maximum value of 3x-4y
• 12. If x ^ 2 + y ^ 2 = 1, what is the maximum value of 3x-4y
• 13. It is known that the definition field of function FX is (0, positive infinity) and FX is an increasing function on the definition field, f (XY) = f (x) + F (y), and f (2) = 1, If f (3) = 1 and f (a) is greater than f (A-1) + 2, the value range of a is obtained
• 14. Given that the definition field of function FX is (0, positive infinity) and f (XY) = f (x) + F (y), f (1 / 2) = 1, find f (2) Forget to ask f (4) F8 ()
• 15. Given 3x = 5Y, 4x = 5Z, find the ratio of X and Z. find X: Y: Z Speed before 8:30! 1
• 16. Solution 1: given that X: Y: z = 3:4:5, and 3x-4y + Z = - 4, find the value of formula x-3y + 5Z. 2 a batch of manuscripts, a copy 30 hours, B copy 20 hours, now from a copy 3 hours later to B copy the rest, ask B how many hours still need to copy (equation solution)
• 17. A / | a | + | B | / B + C / | C | = 1, then the value of (| ABC | / ABC) ^ 2006 / (BC / | ab | · AC / | BC | · AB / | AC |) is________ .
• 18. 1. It is known that a, B and C are not equal to each other Find 2a-b-c / (a-b) (B-C) + 2b-c-a / (B-C) (B-A) + 2c-a-b / (C-A) (C-B) =? (/ is a fractional line) 2. It is known that 1 / A + 1 / B + 1 / C is not equal to 0 The solution equation is: x-a-b / C + x-b-c / A + x-c-a / B + 3 It's better to be careful I'm very sorry. I missed it~ x-a-b/c+x-b-c/a+x-c-a/b+3=3
• 19. If x = (Y-1) / (y + 2), then y is expressed as y by the algebraic expression of X=_______
• 20. Given a + B = 5, A-B = 3, find the value of the algebraic formula A & sup3; b-2a & sup2; B & sup2; + AB & sup3