i need to solve this equation

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Amjad Green
Amjad Green 2018-8-25
编辑： madhan ravi 2018-8-25
81^7-(x/27)^(2*x)=0

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madhan ravi
madhan ravi 2018-8-25
编辑：madhan ravi 2018-8-25
syms x
eqn = 81^7-(x/27)^(2*x)==0
x = vpasolve(eqn,x)
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madhan ravi
madhan ravi 2018-8-25
编辑：madhan ravi 2018-8-25
Read the link below:
https://www.mathworks.com/help/symbolic/mupad_ref/log.html
1) Type mupad in command window.
2) On the right bottom corner:
1) select solve instead of General math.
2) And click numeric option from it type the red line.
3) Press enter to run the code.
madhan ravi
madhan ravi 2018-8-25
编辑：madhan ravi 2018-8-25
You can also thank me by giving a vote :)

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更多回答（1 个）

Yuvaraj Venkataswamy
if true
eqn = 81^7-(x/27)^(2*x) == 0;
solx = solve(eqn, x)
end

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