tan(40)=4/x

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Solution for tan(40)=4/x equation: 


D( x )

cos(40) = 0

x = 0

cos(40) = 0

cos(40) = 0

t_1 = cos(40)

cos(40) = 0

t_1 = 0

x należy do R

x in (-oo:+oo)

x = 0

x = 0

x belongs to the empty set

tan(40) = 4/x

x belongs to the empty set

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