Selling Biology in Focus HSC textbook with one PDF code. Book in perfect condition with NO markings. PM me prices you are willing to pay Looking to sell it around $20. Live in Kingsgrove and could drop off on most airport line stations. Thank you very much.
but if the question asks you to use chain rule do you have to write down the working out like dy/dx=dy/du*du/dx or can you just write the answer straightaway?