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Shelf life for propane? E^x-3
x=e^y-3
x=lny-3
find f'(x)? Find the height of a rhombus with a side 10cm and a diagonal 12 cm? The base of an isosceles triangle is a=24cm side b=20cm find radius r and R (circumscribed and inscribed circle)? Determine o cosseno do ângulo da reta (r): X=(2,0,1) + t (-1,-2,-2) com a reta definida pelos pontos A(4,0,-1) e B(-2,-3,1).?