Tim Cook led Apple (AAPL) across a successful 2014 and shares are up 44% over the last 12 months -- but deal integration and new product launches will define him and the company in 2015. The company is expected to report numbers, fueled by iPhone 6 sales, Tuesday after the close, and the stock may again get a short-term shot in the arm. But long-term challenges for Cook and Apple include integrating their billion-dollar Beats acquisition, as well as the launches of multiple products, including its smartwatch. With analyst projections for sales ranging widely, making investors happy and satisfying fans could mean two different things.
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