<p>I'm a sophomore in college, and I'm just now taking Calculus I. I've always been good at math, but when I first came to college I decided to major in something else, only to find out that I'm bad at that something else and that I don't quite like it as an academic subject. Now I plan to major in Math. I can very easily complete the major requirements in 3 years. My only worry is, if some time in the future I end up liking Math so much that I decide to apply to Math PhD programs, will graduate schools look at my transcript unfavorably because my first year had absolutely nothing mathematical, or will they be happy enough to see that my last three years are filled with math courses (including graduate level courses)?</p>
<p>Take Calc1, Calc2, Calc3 and Differential Equations. Those are easy classes that are similar to the math done in High School etc.</p>
<p>After that, have your choice at a proof-based class (linear algebra, intro to proofs, etc) and that will tell you if you really want to major in math.</p>
<p>Do not base your decision to major in math just because you like Calc1. My advise.</p>