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    trig function differentiation question!

    ok so the integral of cos ax = 1/a sin ax therefore, doesn't it follow that the derivative of sin ax = cos ax therefore, why is the derivative of sin 3x = 3 cos 3x? sorri if is a silly question i just dont understand WHY you have to apply the function of a function rule?? answer...
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    please help with a uai estimation

    Hi i was wondering if you could please help with an estimation for my uai subject trial mark rank Eng Adv 88 48/151 Eng Ext 1 37 14/65 Eng Ext 2 - 9/22 Maths 79 48/106 Modern History 68 17/23 Society&Culture 82 4/10 i go to caringbah high and in...
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