C3 differentiation, help please! Watch

popadom
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Report Thread starter 9 years ago
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Find the minimum value of y = tan x - 8sin x which is given by a value of x between 0 and pi/2

I'm not sure what this question is asking for, could someone point me in the right direction please?
Thanks in advance =)
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JohnKennedy
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differentiate to get dy/dx = sec²x - 8cosx

plug the values in
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popadom
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Okay thanks
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