Find all possible real values of x that satisfy this equation:
xx = 4x+4
fplot(@(x)x*log(x)-(x+4)*log(4))
grid
for x=-100:10
% disp([x x^x 4^(x+4) x^x-4^(x+4)])
fprintf('%5d %12d %14d %14d\n',x,x^x, 4^(x+4), x^x-4^(x+4) )
end
finds only 8 as a solution for positive integers, shown on the graph.
For negative numbers, only integers would do and none of them lead to a solution.
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Posted by Charlie
on 2024-05-05 09:35:40 |
logarithmically
