(4*x)/(1-cos(2*x))-20=0 求x,x为弧度制,matlab算出来的值感觉不对呢
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(4*x)/(1-cos(2*x))-20=0 求x,x为弧度制,matlab算出来的值感觉不对呢
(4*x)/(1-cos(2*x))-20=0 求x,x为弧度制,matlab算出来的值感觉不对呢
(4*x)/(1-cos(2*x))-20=0 求x,x为弧度制,matlab算出来的值感觉不对呢
solve('(4*x)/(1-cos(2*x))-20=0')
ans =
5.4524774147117600265630404774881
答案正确
cos x>-1/2
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