Answers

2015-07-30T22:48:42+08:00

if we use the caculator, the answer is 
28.809 but that is not the answer! that's only an approximation. The two consecutive integers are +√830 and -√830

Example: what is √10?
 
Well, 3 × 3 = 9 and 4 × 4 = 16, so we can guess the answer is between 3 and 4. Let's try 3.5: 3.5 × 3.5 = 12.25 Let's try 3.2: 3.2 × 3.2 = 10.24 Let's try 3.1: 3.1 × 3.1 = 9.61 ... Getting closer to 10, but it will take a long time to get a good answer! calculator At this point, I get out my calculator and it says: 3.1622776601683793319988935444327 But the digits just go on and on, without any pattern. So even the calculator's answer is only an approximation !

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2015-07-31T07:57:44+08:00