T2.1 A 28 mm diameter steel cable is used to raise and lower a passenger lift through a height of 50 m . The lift has a mass of 200 kg and the maximum mass of passengers that may be transported is 1000 kg . What is the maximum extension of the cable? The Young's modulus of steel is 210 GPa .

\( +7175+\sqrt{300} \) \( (6+2 \sqrt{3})^{2}-(4 \sqrt{3})^{2} \) \( 6\left(\right. \) inecles \( { }^{3} \)

d \( y=-2 x+1 \) og \( y=-3 x+5 \)

47. (UFRGS-RS) O sistema de equaçōes \( \left\{\begin{array}{l}5 x+4 y+2=0 \\ 3 x-4 y-18=0\end{array}\right. \) possui: a) nenhuma solução. b) uma solução. c) duas soluções. d) três soluçōes. e) infinitas soluçōes.

Resolver el sistema por el metodo de Eliminacion. Representa graficamente cada \( \begin{array}{l}2 x+5 y=1 \\ 6 x+7 y=3\end{array} \quad\left\{\begin{array}{l}3 x+3 y=10 \\ 3 x-5 y=20\end{array}\right. \)

a función racional \( f(x)=\frac{3 x^{2}+5 x+1}{(x+1)\left(x^{2}+3\right)} \). Al realizar la descomposición en fraciones parciales tenemos la siguiente forma.