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Let f: R + R be defined by f(x) = {w k2x...

Let f: R + R be defined by f(x) = {w k2x, if x5-1 2x+3, if xgt-1If f has a local minimum at x = - 1, then a possiblem at x = - 1, then a possible value of k is :(1) 1(2) 0(3) -(4) -1

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