Concept Byte: Exponential and Logarithmic Inequalities
Sign In
Rewrite the inequality as two functions.
x>1.43
Next, by pushing 2nd and GRAPH, we get a table of values for whole numbers of x. Note that we are looking for x-values that make the Y_1-column more than 1.
From the table, we see that Y_1 is equal to 1 somewhere in the interval 1â–³ Tbl
to 0.001.
Having changed the table setup, push 2nd and GRAPH to see the table again. You are going to have to scroll down to find the value where y=1 for the first function.
From the table, we see that at x ≈ 1.43 the value of the logarithmic function becomes 1. Therefore, the solution to the inequality has to be all values of x that are more than 1.43. x>1.43