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Asked by komuravellysravanthi4 | 26 Apr, 2024, 02:14: PM
Expert Answer
Let a x10 + b x8 + c x6 + d x4 + e x2 + 15 = k
Above expression contains even power of x and constant term .
Hence, if magnitude of x remains constant but sign changes , then value of k will be same
Hence , we write above function as
f(x) = ( 12 x + k ) / x
f(4) = [ 12 × 4 + k ] / 4 = -4
From above expression, we get k = - 64 .
Hence f(-4) = [ 12 × (-4) - 64] / (-4) = 28
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