Kurser og konsulenter - 4D Academy

power 4dPower4D dioperasikan oleh agen Power 4D terbaik yang memiliki lisensi resmi dari pihak berwenang. Keamanan data pemain dijamin melalui sistem enkripsi terbaru 4d teknologiAnswer:the power of a convex lens is always positive. as you can see here the power is +4D, therefore the nature of the lens is that it is a convex lens. we know, P = 1f. also