viewimage.php?id=20bcc42ee0df39b267bcc5&no=29bcc427bd8477a16fb3dab004c86b6f858e30ebd71dc5052ddb3d257e0bd03f629270fc0821998589fcf640861bb76173dfca41d38db3bde3be958d774c910b5126caba14f63beffa4716ddec762c

V(t)와 y(t) 식좀 구해주세요...