Calculus 2: Hyperbolic Functions (20 of 57) Find the derivative of (cosh x)=?

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In this video I will find the (derivative of)coshx=? or d/dx(coshx)=?

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Because we are used to trigonometry it is hard do not think about it especially if the names are that close cos sin, ... (only +h) . Thank you again & again .

hamidthephysicist
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Thanks sir i was really confused why wasnt it negative

mharis