MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
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f) 4 x ! 3!18(4 ! x ) = 0<br />
(4 x ) 2 ! 3(4 x ) !18 = 0 multiply both sides by 4 x<br />
a = 1, b = !3, c = !18<br />
4 x = !(!3) ± (!3)2 ! 4(1)(!18)<br />
2(1)<br />
4 x =<br />
3± 81<br />
2<br />
4 x = 3+ 9<br />
2<br />
or 4 x = 3! 9<br />
2<br />
4 x = 6 4 x = !3 < 0, extraneous root<br />
x log 4 = log6<br />
x = log6<br />
log 4<br />
x &= 1.29<br />
Chapter 7 Section 2 Question <strong>12</strong> Page 376<br />
a)<br />
<strong>MHR</strong> <strong>•</strong> <strong>Advanced</strong> <strong>Functions</strong> <strong>12</strong> <strong>Solutions</strong> 684
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