Error, (in pdsolve) invalid input:

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Question:Error, (in pdsolve) invalid input:

Posted: torabi 85 Product: Maple 2017

January 15 2018

pleae help me for psolve

thanks

pdsolve.mw

restart; nt := 1; nb := 1; R0 := .9149; n := 2; PDE1 := (diff(r*(diff(theta(r, z), r)), r))/r+nb*(diff(theta(r, z), r))*(diff(sigma(r, z), r))+nt*(diff(theta(r, z), r))^2 = 0

(diff(theta(r, z), r)+r*(diff(diff(theta(r, z), r), r)))/r+(diff(theta(r, z), r))*(diff(sigma(r, z), r))+(diff(theta(r, z), r))^2 = 0

(1)

(diff(sigma(r, z), r)+r*(diff(diff(sigma(r, z), r), r)))/r+(diff(theta(r, z), r)+r*(diff(diff(theta(r, z), r), r)))/r = 0

(2)

(3)

Error, (in pdsolve) invalid input: `pdsolve/numeric` expects its 2nd argument, IBCs, to be of type {list, set}, but received (diff(sigma(r, z), r)+r*(diff(diff(sigma(r, z), r), r)))/r+(diff(theta(r, z), r)+r*(diff(diff(theta(r, z), r), r)))/r = 0

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Question: Error, (in pdsolve) invalid input:

Question:Error, (in pdsolve) invalid input:

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