How do I solve this inequality: x^2>2x ?
Solve the equation x2=2x (solve x2-2x=0 by factorisation). Sketch the graphs y=x2 and y=2x, using standard graph shapes. Look at the sketch to see for which values of x the graph y=x2 lies above y=2x; this is your solution.
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If the functions f and g are defined: f: x--> x/5 + 4 g : x--> 30x + 10. what is x, if fg(x) = x. ?? What would fgf(x) = x^2 be??
