若角α的终边在直线4x+3y=0上,则tanα的值为 .
考点分析:
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=
.
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定义方程f(x)=f′(x)的实数根x
叫做函数f(x)的“新驻点”,如果函数g(x)=x,h(x)=lnx,φ(x)=cosx(x∈(
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已知P,Q为抛物线x
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