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solve tan(x)+2*x=0 Follow 6 views (last 30 days) Show older comments rakesh kumar on 27 Mar 2022

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Commented: rakesh kumar on 27 Mar 2022 Accepted Answer: Sam Chak Open in MATLAB Online I am trying solve tan(x)+ 2*x=0. however when i checked the result I am not getting the result zero.Please help where I am wrong.my code issyms xfor n = 1:10 x1 = (n-1/2)*pi; x2 = (n)*pi; v(n) = double(vpasolve(tan(x)+2*x == 0,x,[x1 x2])) check(n)=tan(180*v(n)/pi)+2*v(n)endv = 1.8366 4.8158 7.9171 11.0408 14.1724 17.3076 20.4448 23.5831 26.7222 29.8619check = 74.6635 9.0421 18.6043 24.2170 40.6395 32.7051 40.4513 47.5085 55.4912 57.0835

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Sam Chak on 27 Mar 2022

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Hi @rakesh kumarI think you are not wrong, but it has infinitely many solutions. The solution v is in radian, but you checked as if v is in degree.

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rakesh kumar on 27 Mar 2022 ×

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thanks a lot,

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Torsten on 27 Mar 2022

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Open in MATLAB Online Your check must becheck(n)=tan(v(n))+2*v(n)instead ofcheck(n)=tan(180*v(n)/pi)+2*v(n)

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rakesh kumar on 27 Mar 2022 ×

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thanks, ihave made the correction. thanks once again

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