1 + 3 / 4 + 5 / 4 * 4 + 7 / 4 * 4 * 4 + 9 / 4 * 4 * 4 * 4. + 23 / 4 * 4 * 4 * 4. * 4 = how much (* = multiplier / = semicolon)

This is a sequence 2n + 1 / (4 ^ n) n = (0 - ∞). First, we prove that the function converges, and then sum the sequence

RELATED INFORMATIONS

1. When m is what integer, the solution of the equation MX = 4-x is a positive integer?
2. When m goes to any integer, the solution of the equation MX / 2-5 / 3 = (x-4 / 3) / 2 is a positive integer
3. When m is what number, the solution of the equation MX = 4-x is a positive integer?
4. Given that M is a positive integer, find the value of m that makes the solution of the equation MX = 3-x about x a positive integer
5. If M is a positive integer, then the positive integer solution of the equation 2x + 5m = 17 about X is______ ．
6. If M is a positive integer, then the positive integer solution of the equation 2x + 5m = 17 about X is______ ．
7. If M is a positive integer, then the positive integer solution of the equation 2x + 5m = 18-x about X is
8. If M is a positive integer, then the positive integer solution of the equation 2x + 5m = 17 about X is______ ．
9. If M is a positive integer, then the positive integer solution of the equation 2x + 5m = 17 about X is______ ．
10. When m is an integer, the solution of the equation 12mx − 53 = 12 (x − 43) is a positive integer?
11. 15 = x / 3 + 2. (x + 2) / 3 = (3-x) / 2. (x-3) / 4 - (1 + 3x) / 8.7 - (x + 5) / 2 = (2-x) / 5-3x
12. -13 * 2 / 3-0.34 * 2 / 7 + 1 / 3 * (- 13) - 5 / 7 * 0.34 * is a multiplication sign and / is a semicolon
13. 1 / (2 / 3) / (3 / 4) / (4 / 5) / (2009 / 2008) / is a division sign 1 / (2 / 3) / (3 / 4) / (4 / 5)...... (2008 / 2009) wrong number
14. 1 / (1 / 2) + 1 / (2 * 3) + 1 / (3 * 4) +... + / (2007 + 2008) = / is division sign, * is multiplication sign, online, etc., the best solution 1 / (1 / 2) + 1 / (2 * 3) + 1 / (3 * 4) +. + / (2007 + 2008) = / is division sign, * is multiplication sign, online, etc., the best solution
15. 1.2x-1.4 = 8.2 who can do a simple equation and have a solution (note that 1.2x is not a multiplication sign but X And say why
16. 0.52x [multiplier] 5-4x [unknown] = 0.6 7 / 10 [x + 0.9] = 421.3x + 2.4x3 = 12.4
17. To solve the equation: 5x-10 × 5 = 3x, the multiplier sign is in the middle
18. Solve the equation 5x = 1 / 3 x / 4 = 3 / 8 1 / 3x = 9 2 / 5x = 1 / 3x4 (x = multiplier)
19. Solve the equation: 3x-12 * 3 = 24, solve the equation! Note that the one after 3 is not a multiplier sign
20. The range of the function y = SiNx + 3cosx, X ∈ [- 2, π 3, π 3] is______ ．