I really dont understand this question, what should i be finding

DROPBOX QUESTION 1 (5 points) This question is one of three Dropbox Questions. For this question, you will write out answers by hand, on paper, and, after the test is done and you have (1) submitted the test and (2) exited the RLDB, then you will compile your Dropbox Questions into *one* clear, legible PDF file (not an image file) and upload it to the appropriate Dropbox in MyLS. Evaluate dropboxQ1 lim 4tan (r (f(x))2), where dom(f(x)) = (-0o,0) and f(r) has a nonzero horizontal asymptote. Use exact values, not decimal approximations. Justify your answer. Insufficient justification, illegible, or unclear work will result in a loss of marks