Saturday 24 December 2016

FUNCTIONS 5


Find the maximum value of the quadratic equation:3-2t-8t2.

Solution

a=-8, b=-2, c=3

Maximum = 4ac-b2
                        4a

Maximum = (4 x -8 x 3) - (-2)2
                          4(-8)

Maximum = (-96)- 4
                         32

Maximum= -100
                       32

Maximum = -25
                       8
Hence maximum value is -25/8

TRY THIS………………………………..

NECTA  2003 QN. 10c

Find the maximum value of the quadratic equation:3+30t-5t2.

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