Question

Pentru ce valori reale a variabilei x ,valorile functiei f:R⇒R,f(x)=3-5x apartin intervalului (-5;6]

Answer 1

-5 < 3 - 5x ≤ 6 | - 3 => -8 < - 5x ≤ 3 | *(-1) => -3 ≤ 5x < 8 | : 5 =>

$x\in\left[-\dfrac{3}5,\dfrac{8}5\right).$

Green eyes.