函数=asin2X +btanX+1,f(2)=5,问f (派-2)+f(派)等于多少

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函数=asin2X +btanX+1,f(2)=5,问f (派-2)+f(派)等于多少
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函数=asin2X +btanX+1,f(2)=5,问f (派-2)+f(派)等于多少
函数=asin2X +btanX+1,f(2)=5,问f (派-2)+f(派)等于多少

函数=asin2X +btanX+1,f(2)=5,问f (派-2)+f(派)等于多少
f(x)=asin2x+btanx +1
f(2)=asin4+btan2+1=5,所以 asin4+btan2=4
f(π-2)=asin2(π-2)+btan(π-2)+1=asin(2π-4)-btan2+1=-(asin4+btan2)+1=-4+1=-3
f(π)=asin2π+btanπ+1=1
从而 f(π-2)+f(π)=-3+1=-2

f(x)-1=asin2X +btanX
f(-x)-1=-asin2X -btanX
f(2)=5
f(2)-1=4
f(-2)-1=asin(-4) +btan(-2)=-4
f (派-2)=asin(2派-4) +btan(派-2)+1=asin(-4) +btan(-2)+1=-3
f(派)=1
f (派-2)+f(派)=-2