oxed{ rac{9}{2}}
Related Articles
- x = rac{9}{2}
- Since \( x = rac{9}{2}
- e -5 \), the solution is valid.
- A mechanical engineer in California develops energy-efficient heating systems and models heat loss with \( H(t) = 4t^2 - 12t + 9 \). Find the minimum heat loss and the time at which it occurs.
- The function \( H(t) = 4t^2 - 12t + 9 \) is a quadratic in standard form \( at^2 + bt + c \), with \( a = 4 > 0 \), so it opens upwards and has a minimum at its vertex.
- t = - rac{b}{2a} = - rac{-12}{2 \cdot 4} = rac{12}{8} = rac{3}{2}
