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標題:
發問:
For 0≦x≦360, how many roots does the equation tan x = 2 sin x have? 更新: x is greater 或 equal 0和 smaller or equal 360
最佳解答:
tan x = 2 sin x sinx /cosx =2 sinx sinx=2sinx cosx sinx (1-2cosx)=0 sinx =0 or cosx =1/2 x = 0, 180,360 or x=60,300 so there is 5 roots
其他解答:
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2002 ce maths mc 48發問:
For 0≦x≦360, how many roots does the equation tan x = 2 sin x have? 更新: x is greater 或 equal 0和 smaller or equal 360
最佳解答:
tan x = 2 sin x sinx /cosx =2 sinx sinx=2sinx cosx sinx (1-2cosx)=0 sinx =0 or cosx =1/2 x = 0, 180,360 or x=60,300 so there is 5 roots
其他解答:
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