Khan Academy on a Stick
Series de Taylor para coseno en 0 (Maclaurin)
Aproximando f(x)=cos x utilizando series de Maclauren (un caso especial de las series de Taylor en x=0)
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Aproximando f(x)=cos x utilizando series de Maclauren (un caso especial de las series de Taylor en x=0)
If the above player doesn't work, you can try this direct link.