Compare the graphs of the logarithmic functions f(x)= log7 (x) and g(x)=log4(x) . For what values of x is f=g , f>g, and f
2 answers:
The
blue curve represents the f(x) function while the orange curve represents the
g(x) function
f=g, if x<0 and f>g, if x>0
f=g, if x<0 and f>g, if x>0
Answer:
The graph of f(x) and g(x) is defined for x>0 as logarithmic function is always defined for x>0. By looking at the attached graph of f(x)=log(7 x) and g(x)=log(4 x) we could clearly observe that
f(x) and g(x) tends to minus infinity as x tends to zero i.e. f(x)≈g(x) when x→0.
otherwise f(x)>g(x) for x>0.
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<em>Greetings from Brasil... </em>
A 1st degree function can be written in two ways:
F(X) = AX + B
or
Y = AX + B
note that F(X) = Y
So, looking at the alternatives in the question, only Y = 7X/3 - 8 is equivalent to Y = AX + B, where:
A = 7/3
B = - 8
then
<em>a function of the 1st degree</em>
answer:
<h2>Y = (7/3)X - 8</h2>