limx→0ln(cosx)sin2x=?
I can solve this by using L'Hopital's rule but how would I do this without this?
Answer
log(cos(x))sin2(x)=12log(1−sin2(x))sin2(x)=−sin2(x)+O(sin4(x))2sin2(x)x→0→−12.
I have injection f:A→B and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...
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