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Real root of the equation (x-1)^(20...

Real root of the equation
`(x-1)^(2013) +(x-2)^ (2013) +(x-3)^ (2013)+……….+(x-2013)^(2013) =0` is a four digit number. Then the sum of the digits is :

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To find the real root of the equation \[ (x-1)^{2013} + (x-2)^{2013} + (x-3)^{2013} + \ldots + (x-2013)^{2013} = 0, \] we can follow these steps: ### Step 1: Identify the Middle Value The terms in the equation range from \(1\) to \(2013\). The middle term can be calculated as: \[ \text{Middle term} = \frac{\text{First term} + \text{Last term}}{2} = \frac{1 + 2013}{2} = \frac{2014}{2} = 1007. \] ### Step 2: Substitute the Middle Value Now, we will substitute \(x = 1007\) into the equation: 1. The first term becomes: \[ (1007 - 1)^{2013} = (1006)^{2013}. \] 2. The last term becomes: \[ (1007 - 2013)^{2013} = (-1006)^{2013}. \] ### Step 3: Analyze the Terms Notice that \( (-1006)^{2013} \) is the negative of \( (1006)^{2013} \). Therefore, the first and last terms cancel each other out: \[ (1006)^{2013} + (-1006)^{2013} = 0. \] ### Step 4: Check Other Terms Next, we check the second term and the second last term: 1. The second term becomes: \[ (1007 - 2)^{2013} = (1005)^{2013}. \] 2. The second last term becomes: \[ (1007 - 2012)^{2013} = (-1005)^{2013}. \] Again, these two terms cancel each other out: \[ (1005)^{2013} + (-1005)^{2013} = 0. \] ### Step 5: Continue This Pattern Continuing this pattern, we see that all terms will cancel out in pairs, leaving us with: \[ (1007 - 1007)^{2013} = 0^{2013} = 0. \] Thus, \(x = 1007\) is indeed a root of the equation. ### Step 6: Find the Sum of the Digits Now, we need to find the sum of the digits of \(1007\): \[ 1 + 0 + 0 + 7 = 8. \] ### Final Answer The sum of the digits is: \[ \boxed{8}. \] ---
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RESONANCE ENGLISH-APPLICATION OF DERIVATIVES-Exersise-2 Part II
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