S
sundays


giup minh voi
LIM [1-(1+x)(1+2x)...(1+nx)]/x
x->0
LIM [can(5+sinx)-can(5-sinx)]/x
x->0
LIM [1-(1+x)(1+2x)...(1+nx)]/x
x->0
LIM [can(5+sinx)-can(5-sinx)]/x
x->0
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