Let f(x, y) = x sin(x + y) +x+y for z, y (-00, 00)....
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Calculus
Let f(x, y) = x sin(x + y) +x+y for z, y (-00, 00). Which of the following statementis true?(a)9(b) f(x, y)dy = -x cos(z + a) + x cos(x) + ax + for a > 0.2f(x,y)lim(2,3)+(0,0) x(x + y) = 1.(c)f(x, y) = 2x cos(x + y) + sin(x + y) + 1.(d) The tagent planc to the surface z = f(x, y) at the point (0,0,0) is z = 2x + y.(e) None of the above statements is truc.
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