It is known that the set a = R, B = R +, F: a → B is a mapping from a to B. if f: X → 2x – 1, then the primitive image of element 3 in B is the process to be solved. Thank you It is known that the set a = R, B = R +, F: a → B is a mapping from a to B. if f: X → 2x – 1, then the primitive image of element 3 in B is To solve the process, thank you. What else is the original image

RELATED INFORMATIONS

• 1. Given that the elements (x, y) in the set a correspond to the elements (x + y, X-Y) in the set B under the mapping f, then the elements (4, - 2) in the set B correspond to the elements (x + y, X-Y) in the set a__________ x+y=4, x-y=-2 x=1,y=3. (1,3) Why not the other way around? x+y=-2, x-y=4?
• 2. XY + YZ + ZX = 1, find x √ YZ + y √ ZX + Z √ XY Is less than or equal to
• 3. Solve the equations 1. X + y + 5 = 0 2. XY + 14 = 0 x = y=
• 4. If the solutions X and y of the system 3x = y + 32kx − (K − 1) y = 6 are opposite to each other, then K=______ ．
• 5. If the solutions X and y of the system 3x = y + 32kx − (K − 1) y = 6 are opposite to each other, then K=______ ．
• 6. Solving equations: x ^ 2 + y ^ 2 = 37, xy = 6
• 7. Solve the equations: xy = 6, y = x + 6
• 8. How to solve the system of equations x + y = 7, xy = 12
• 9. Equations √ x + √ y = 9 √ xy = 20
• 10. Solve the equations x * 2 + y * 2 + X + y = 18, X * 2 + XY + y * 2 = 19
• 11. Let a = b = {(x, y) ｜ x belong to R, y belong to R}, mapping f ∶ a → B maps elements (x, y) in a to elements (X-Y, 2x + y) in B, Then under the mapping f, the corresponding element of element (1,2) in a in B is ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
• 12. If a = {(x, y)} is a set under a mapping, B = {(2x-y, x + 2Y)}, we know that C = {(a, b)} is a set under F If a = {(x, y)} set B = {(2x-y, x + 2Y)} under the mapping and C = {(a, b)} set D = {(- 1,2)} under f are known, the values of a and B are obtained
• 13. Given the set a = {(x, y) | x + y = 1}, mapping f: a → B, under the action of F, the image of point (x, y) is (2x, 2Y), then the set B is______ ．
• 14. In the mapping f: A-B, a = b = {(x, y) | x belongs to R, y belongs to R}, F: (x, y) → (x + 2Y, 2x-y), then the element in B corresponding to element (3,1) in a = is
• 15. If 4.5 divided by x equals 4 divided by Y, what's the ratio of XY
• 16. Given that 1 divided by x plus 1 divided by Y equals 3, find 3x + XY + 3Y divided by x-xy + y
• 17. Let (X & sup2; + Y & sup2;) (A & sup2; + B & sup2;) = (AX + by) & sup2;, and XY ≠ 0, ab ≠ 0, try vector method to prove X / a = Y / b
• 18. Given the set a = {(x, y) | x | + | y | = a, a > 0}, B = {(x, y) | XY | + 1 = | x | + | y |}, if a ∩ B is a set of vertices of a regular octagon on a plane, then the value of a is Please explain why,
• 19. If {x, XY, LG (XY)} = {0, | x |, y} then log8 (x ^ 2 + y ^ 2)
• 20. If the set {x, XY, LG (XY)} = {0, | x | y}, then log8 (x2 + Y2)=______ ．