2.Wyznacz wzór ogólny ciągu geometrycznego (an). Oblicz wyrazy a4 i a7. a1=4, q=-1
a1 = 4 , q = - 1
zatem
an = a1*q^(n-1) = 4*( -1)^(n-1) = - 4 *(-1)^n
===========================================
oraz
a4 = -4*(-1)^4 = - 4
a7 = - 4*(-1)^7 = -4*(-1) = 4
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a1 = 4 , q = - 1
zatem
an = a1*q^(n-1) = 4*( -1)^(n-1) = - 4 *(-1)^n
===========================================
oraz
a4 = -4*(-1)^4 = - 4
a7 = - 4*(-1)^7 = -4*(-1) = 4
============================