2x42 - Dragon Ball Z: Dragon Box

Freeza, having finally shown his true form, attacks and kills Dende with speed that is faster than Gohan and the others can see. They team up for a three-man attack against Freeza, but are unable to even touch him. Vegeta, the only one able to see Freeza's attacks, confidently challenges him to battle. Has Vegeta truly become a Super Saiyan?