3MiB, 400x300, 9f37c8f45b752008730317d7c5c9bb39.gif View SameGoogleiqdbSauceNAO Anonymous Tue 01 Oct 19:36:00 2019 No.11023523 ViewReplyOriginalReport Quoted By: >>11023525 >>11023555 >Derivative dy = 3 r squared dr over 3, or r squared dr, or r dr r. Get it /sci/? RDRR!