Odpowiedź :
Odpowiedź:
a)
dla x = -4 f(x) = 3^-4 = 1/81
dla x = -3 f(x) = 3^-3 = 1/27
dla x = -1/2 f(x) = 3^-1/2 = 0,58
dla x = 1/2 f(x) = 3^1/2 = 1,73
dla x = 3 f(x) = 3^3 = 27
dla x = 4 f(x) = 3^4 = 81
b)
dla x = -4 f(x) = 4^-4 = 1/256
dla x = -3 f(x) = 4^-3 = 1/64
dla x = -1/2 f(x) = 4^-1/2 = 1/2
dla x = 1/2 f(x) = 4^1/2 = 2
dla x = 3 f(x) = 4^3 = 64
dla x = 4 f(x) = 4^3 = 256
c)
dla x = -4 f(x) = 1/4^-4 = 256
dla x = -3 f(x) = 1/4^-3 = 64
dla x = -1/2 f(x) = 1/4^-1/2 = 2
dla x = 1/2 f(x) = 1/4^1/2 = 1/2
dla x = 3 f(x) = 1/4^3 = 1/64
dla x = 4 f(x) = 1/4^3 = 1/256
d)
dla x = -4 f(x) = 1/2^-4 = 16
dla x = -3 f(x) = 1/2^-3 = 8
dla x = -1/2 f(x) = 1/2^-1/2 = √2 = 1,41
dla x = 1/2 f(x) = 1/2^1/2 = √ 2/2 = 0,707
dla x = 3 f(x) = 1/2^3 = 1/8
dla x = 4 f(x) = 1/2^3 = 1/16
Szczegółowe wyjaśnienie:
a)
[tex]f(-4) = 3^{-4}= \frac{1}{3} ^{4} =\frac{1}{81}\\f(-3) = 3^{-3}= \frac{1}{3} ^{3} =\frac{1}{27}\\\\f(-\frac{1}{2} ) = 3^{-\frac{1}{2} }= \frac{1}{3} ^{\frac{1}{2} } =\sqrt{\frac{1}{3} }\\\\f(\frac{1}{2} ) = 3^{\frac{1}{2} }= \sqrt{3}\\\\f(3)=3^{3}=27 \\f(4)=3^{4}=81[/tex]
b)
[tex]f(-4) = 4^{-4}= \frac{1}{4} ^{4} =\frac{1}{256}\\f(-3) = 4^{-3}= \frac{1}{4} ^{3} =\frac{1}{64}\\\\f(-\frac{1}{2} ) = 4^{-\frac{1}{2} }= \frac{1}{4} ^{\frac{1}{2} } =\sqrt{\frac{1}{4} }=\frac{1}{2} \\\\f(\frac{1}{2} ) = 4^{\frac{1}{2} }= \sqrt{4}=2\\\\f(3)=4^{3}=64 \\f(4)=4^{4}=256[/tex]
c)
[tex]f(-4) = \frac{1}{4} ^{-4}= 4 ^{4} =256\\f(-3) = \frac{1}{4} ^{-3}= 4 ^{3} =64\\\\f(-\frac{1}{2} ) = \frac{1}{4} ^{-\frac{1}{2} }= 4 ^{\frac{1}{2} } =\sqrt{4 }=2\\\\f(\frac{1}{2} ) = \frac{1}{4} ^{\frac{1}{2} }= \sqrt{\frac{1}{4} }=\frac{1}{2} \\\\f(3)=\frac{1}{4} ^{3}=\frac{1}{64} \\f(4)=\frac{1}{4} ^{4}=\frac{1}{256}[/tex]
d)
[tex]f(-4) = \frac{1}{2} ^{-4}= 2^{4} =16\\f(-3) = \frac{1}{2} ^{-3}= 2 ^{3} =8\\\\f(-\frac{1}{2} ) = \frac{1}{2} ^{-\frac{1}{2} }= 2 ^{\frac{1}{2} } =\sqrt{2 }\\\\f(\frac{1}{2} ) = \frac{1}{2} ^{\frac{1}{2} }= \sqrt{\frac{1}{2} } \\\\f(3)=\frac{1}{2} ^{3}=\frac{1}{8} \\f(4)=\frac{1}{2} ^{4}=\frac{1}{16}[/tex]