Evaluate by separation of variables. dB du = u(1 – u²) sec 3 O 2u? + sin 28 = C – (1 – u²)² O 2 sec 8 + sin 26 – C- (1– u²)² O 2 tan B+ sin 26 = C- (1- u)² O None of the choices O 28+ sin 26 = C - (1– u)2 %3D

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A: Since you have posted multiple questions i can do first question as per our company guidelines…

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A: I am attaching image so that you understand each and every step.

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Q: Is it log or ln that should be used?

A: You are right. There was a mistake from our end.  Here is the correct explanation: y=x3x Take ln on…