If The Mapping Of f(x) = ax + b, a < 0 Maps [–1, 1] Onto [0, 2], Then For All Values Of is

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Question

If the mapping of f(x) = ax + b, a < 0 maps [–1, 1] onto [0, 2], then for all values of is

None of these

diffcult

Solution

Correct option is

f(x) is dec. function

F(–1) = 2 and F(1) = 1

Thus F(x) = –x + 1

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