Tuesday, 1 December 2015

FUNCTIONS 1




If F(x) = log5x, Find F(1/125)

Solution

F(x) = log5x

F(1/125) = log5(1/125)

F(1/125) = log3125-1

F(1/125) = log5(53)-1

F(1/125) = log55(3 x -1)

F(1/125) = log55-3

F(1/125) = -3log55

F(1/125) = -3 x 1

F(1/125) = -3


Therefore F(1/125) = - 3

TRY THIS...............

If F(x) = log3x, Find F(1/729)

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