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What is the most absorbent element for oxygen? Given, f(x.y) = 10 * (sin(xy) + 1) / (sqrt(x^2+y^2+1)):
a) find a highest direction at point (0,1)
b) tangent line at point (0,1)? In San Diego (120° Long) it is noon, Tues. What time and day is it at London, England (0° Long)? What is the probability of the couple having a child with brown eyes? What is the probability of the couple having a child with green eyes? Chemistry question help?