Problemas
Determine the values of k for which the equation has no solutions: vert 2x+7vert -kleqslant 5 klt -5 kgt 5 klt 5 kgt -5
Roztwór
Javier
professionell · Tutor durante 6 años
4.6
(243 Votos)
Respuesta
To determine the values of k for which the equation has no solutions, we need to analyze the given inequality:
First, let's isolate the absolute value expression:
Now, we need to consider the two cases for the absolute value expression:Case 1:
Case 2:
For the equation to have no solutions, there should be no values of x that satisfy both cases. This means that the range of x for both cases should not overlap.In Case 1, the range of x is
, and in Case 2, the range of x is
.For these ranges to not overlap, the value of k must be such that
.Therefore, the correct answer is:
.