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Common Core Alignment ![]() |
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#1 |
Join Date: May 2010
Posts: 1
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![]() can someone help me and explain how to solve this? i hope somene can solve this and help me XD
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#2 | |
![]() ![]() ![]() Join Date: Dec 2008
Posts: 249
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![]() Quote:
x - 0.73205 <= 0 x <= 0.73205 So for those values of x, is the right hand side (RHS) ever less than 0? 10(0.73205)^2 + 7 = 12.359 As x gets smaller than 0.73205, the RHS is never less than zero. So all values of x <= 0.73205 satisfy the inequality. Now we need to check values of x greater than 0.73205 The LHS is the graph of a line, while the RHS is a parabola opening upward with a vertex at (0,7). So for values of x >0.73205 the parabola will always be greater than the line since it increases at a faster rate than the line. Therefore, all real values of x will satisfy the inequality. If x can be a complex number, then the solution is more difficult. |
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