limx→ 0tanx−sinxx3
I am getting 0. I even tried to plug in small values for x and got the same answer. But the book's answer is 1/2.
I don't understand. Am I doing something wrong? Please help ��
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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