wyznacz taka wartoasc aby liczby -3 x, -12 byly kolejnymi wyrazami ciagu geometrycznego
-3, x, -12
a1 a2 a3
a2 / a1 = a3 / a2
x / (-3) = (-12) / x
x * x = (-3) * (-12)
x^2 = 36
x = 6 lub x = -6
x^2=-3*(-12)
x^2=36
x=6 lub x=-6
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-3, x, -12
a1 a2 a3
a2 / a1 = a3 / a2
x / (-3) = (-12) / x
x * x = (-3) * (-12)
x^2 = 36
x = 6 lub x = -6
x^2=-3*(-12)
x^2=36
x=6 lub x=-6