Q | W | E | R | T | Y | U | I | O | P | A | S | D |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
F | G | H | J | K | L | Z | X | C | V | B | N | M |
14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
将明文转换成密文,如:,即R变为L;
将密文转换成明文,如:,即X变为P;
已知不管是将明文转换成密文还是将密文转换成明文x(或x)的值都是1≤x(或x)≤26的自然数。
(1)按上述方法将明文N、E、T译为密文;
(2)若按上述方法将明文译成的密文为D、W、N,请找出它的明文。
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2