1.

Find the (L left ( frac{d}{dt}( frac{sin t}{t}) right) ).

A. s cot<sup>-1</sup> s-1
B. s tan<sup>-1</sup> s-1
C. s cot u2061(s)-1
D. s tan u2061(s)-1
Answer» B. s tan<sup>-1</sup> s-1


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