oblicz wartosc wyrazen dla wskazanych wartosci zmiennych
dla x=
dla x=-
(x-3)³ + 2(x+1) =(1 2/3 -3)³+2(1 2/3 + 1) =
=(-1 1/3)³ + 2*2 2/3 =
=(-4/3)³ + 2 * 8/3 =
= -64/27 + 16/3 =
= -64/27 + 144/27 =
= 80/27 = 2 26/27
(-1 1/4)² +2 (-5/4)²+2 25/16 +2
-------------=------------ = -----------=
-1 1/4 -1 -2 1/4 - 9/4
25/16 + 32/16 57/16
=----------------=---------= 57/16 * (-4/9)=
-9/4 -9/4
= - 57/36 = -1 21/36 = -1 7/12
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(x-3)³ + 2(x+1) =(1 2/3 -3)³+2(1 2/3 + 1) =
=(-1 1/3)³ + 2*2 2/3 =
=(-4/3)³ + 2 * 8/3 =
= -64/27 + 16/3 =
= -64/27 + 144/27 =
= 80/27 = 2 26/27
(-1 1/4)² +2 (-5/4)²+2 25/16 +2
-------------=------------ = -----------=
-1 1/4 -1 -2 1/4 - 9/4
25/16 + 32/16 57/16
=----------------=---------= 57/16 * (-4/9)=
-9/4 -9/4
= - 57/36 = -1 21/36 = -1 7/12