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Sum Fractional Ratios (Posted on 2023-08-07) Difficulty: 3 of 5
Determine the value of M when:
M = (32+1)*(32-1)-1+(52+1)*(52-1)-1+(72+1)*(72-1)-1+......+ (9992
+1)*(9992-1)-1

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (2 votes)

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Solution computer solution (spoiler) | Comment 1 of 4
M=sym(0);
for b=sym(3):2:999;
  M=M+(b^2+1)/(b^2-1);
end
disp(M)
disp(eval(M))

finds the rational fraction and its decimal equivalent
 
499499/1000
                   499.499 

  Posted by Charlie on 2023-08-07 12:27:14
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