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secondary 4 | A Maths
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How to solve this question? Help me please
Date Posted: 5 years ago
Views: 223
f(x) = 4x-m
=> f⁻¹(x) = ¼(x+m)
f⁻¹(x) = kx + ⁹⁄₁₆
=> f(x) = (x - ⁹⁄₁₆)÷k
so,
4x-m = (x - ⁹⁄₁₆)÷k ...... [1]
¼(x+m) = kx + ⁹⁄₁₆ ........ [2]
=> f⁻¹(x) = ¼(x+m)
f⁻¹(x) = kx + ⁹⁄₁₆
=> f(x) = (x - ⁹⁄₁₆)÷k
so,
4x-m = (x - ⁹⁄₁₆)÷k ...... [1]
¼(x+m) = kx + ⁹⁄₁₆ ........ [2]
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