2010011002 Level: AWhich of the following statements is not true?log126=−3log128=−3log22=12log1214=2
2010011001 Level: AAmong offered answers, choose a logarithmic form of the following equality. 16=4log164=12log1216=4log412=16log24=16
2010009905 Level: ALet f(x)=−3x. Find the false statement.The function f is bounded above.The range of f is (−∞;0)∪(0;∞).The function f is increasing on (−∞;0).The function h defined by h(x)=−f(x) is an odd function.
2010009803 Level: AWhich of the following equations has exactly two solutions in the interval [−π2;π2]?3cosx−2=03sinx−2=02cosx−3=03cosx+2=0
2010009802 Level: AHow many solutions does the equation cotg2x=3 have for −π≤x≤π?4 solutions2 solutions8 solutions6 solutions
2010009801 Level: AHow many solutions does the equation sin2x=0.75 have for 0≤x≤2π?4 solutions1 solution2 solutions3 solutions