I will be taking my first philosophy class soon although my major is not

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I will be taking my first philosophy class soon although my major is not philosophy. I already know the basics of philosophy and the philosophical positions of my professor so I can anticipate what kind of essays I will be writing. I know for a fact that my philosophical views are radically different from both his and society in general so should I just argue for the sake of arguing or should I take the safe route and agree with what I think his views are so that I can be judged to lesser standard and get a higher mark? Just how biased are philosopher professors really?