Asked by Paul
Find an exponential function of the form
f(x) = ba^x that has the given y-intercept and passes through the point P.
y-intercept 4; P(2, 1)
f(x) = ba^x that has the given y-intercept and passes through the point P.
y-intercept 4; P(2, 1)
Answers
Answered by
Steve
a^x always passes through (0,1), so
f(x) = 4a^x
1 = 4a^2
a = 1/2
f(x) = 4 * (1/2)^x
f(x) = 4a^x
1 = 4a^2
a = 1/2
f(x) = 4 * (1/2)^x
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