Which of the following are indeterminate forms e. sot co b, d. h. Ox 0∞ ; ox O 9. ∞-00 8/8

Which of these are invalid equations in index notation? Tick all that apply. A B a b c d © C D a b + c d E a b + c d k i ac bd; a b +c,d, k k

Use suitable sum-to-product formulas to rewrite the following expression in terms of tan3x. sin 2x + sin 4x cos 2x + cos 4x 2 * Student can enter max 2000 characters W S Alt X DG BIUS X F3 #M 3 E D F4 с $ 4 R F5 F % 5 V Search F6 T G 6 Use the paperclip button below to attach files. F7 B I F8 & 7 H U N F9 *00 ★ 8 J 1 F10 ( 9 M K F11 F12 L O 9 P Alt Prt Sc Ctrl

2. Write the expression in terms of x and y only. You do not need to rationalize your answer, however, write your answer as one fraction. sin (cos-1 x – tan-1 4y)