Find the differential, dy, of y = f(x) = tan(3r²). 1. dy 2. dy 3. dy 4. dy = = = 3 sec²(3x²) tan(3x²) + dx = 6x sec²(3x²) dx 5. dy= 6x sec² (3x) + dx 3 sec²(3x²) tan (3x²) 3 sec²(3r²) tan(3r²) dr dx

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