Question

helphelphelphelphelphelphelphelp

Answer 1

$y=Big ( frac{1}{2} Big )^{sqrt{5-4x-x^2}}\\OOF:; ; 5-4x-x^2 geq 0\\x^2+4x-5 leq 0; ; ,; ; ; x_1=-5; ,; ; x_2=1; ; (teorema; Vieta)\\(x-1)(x+5) leq 0\\+++[-1, ]---[, 5, ]+++\\xin [-1,5, ]$