需要 じゅよう所得 しょとく弾力 だんりょく せいじゃなかったです
juyōno shotokudanryokuseijanakattadesu

Noun
Desu Copula

The polite, past negative form of 需要の所得弾力性

1. Wasn't income elasticity of demand.

Past/Perfective
Negative
Polite
Casual Register