Algebra
Let f(x) be a function whose domain is [-5, 7] and g(x) = |2x+5|. Then, the domain of fog(x), is a)[-5,1]b)[-4,0]c)[-6,1]d)none of these While solving this question we take – 7 is less than or equal to |2x + 5| is less than or equal to 7.Why don’t we then consider – 5 as the lower limit and 5 as the upper limit.
Let f(x) be a function whose domain is [-5, 7] and g(x) = |2x+5|. Then, the domain of fog(x), is
a)[-5,1]
b)[-4,0]
c)[-6,1]
d)none of these
While solving this question we take – 7 is less than or equal to |2x + 5| is less than or equal to 7.
Why don’t we then consider – 5 as the lower limit and 5 as the upper limit.
