Question 1

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Question text

Consider the following system of equations, defined in a proper domain

open curly brackets table row cell sin open parentheses negative x minus 2 times y minus 2 times z close parentheses equals 0 end cell row cell straight e to the power of y squared plus z end exponent equals e to the power of alpha end cell end table close

a) Find the value of alpha for which the system defines x equals x left parenthesis y right parenthesis comma space space z equals z left parenthesis y right parenthesis in a neighbourhood of the point open parentheses 0 comma 2 comma negative 2 close parentheses:

b) The value of x apostrophe comma space z apostrophe in a neighbourhood of the point open parentheses 0 comma 2 comma negative 2 close parentheses are respectively and

c) Let C be the curve defined by Error converting from MathML to accessible text., being x comma space z the aforementioned implicit functions. The equation of the normal plane to the tangent line of C at the point open parentheses 0 comma 2 comma negative 2 close parentheses is
x+y+z = 1

d) Let F be the function

F left parenthesis x comma y comma z right parenthesis space equals space open parentheses straight e to the power of xyz comma sin open parentheses negative x minus 2 times y minus 2 times z close parentheses comma straight e to the power of y squared plus z end exponent close parentheses
The determinant of the differential matrix associated to Error converting from MathML to accessible text. in a neighbourhood of the point Error converting from MathML to accessible text.is:






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