Question

37/26

Oblicz :

d) (-0,2)¹² * 5¹² * (-1) ⁻¹³ =

daje naj :)

odpowiedź to : -1

Answer 1

*(-1)=*(-1)=1*(-1)=(-1)

Answer 2

(-0,2)^12 * 5^12 * (-1)^(-13) =

= (1/5)^12 * 5^12 * (-1)^(-13) =

= (1^12 / 5^12) * 5^12 * 1/(-1)^13 =    / skracamy 5^12

1^12 * 1/(-1)^13 =

1 * (-1) = -1

(bo: 1 do n daje 1   oraz  -1 do nieparzystego n daje -1)