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Let y = log e ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + 2 2 x 1 x – 1 , –1 < x < 1. Then at x = 2 1 , the value of 225 (y' – y'') is equal to

1. 742
2. 746
3. 732
4. 736

Correct answer: 736

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