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Re: Calculando equação do 2 grau
From: |
claudiocaldas |
Subject: |
Re: Calculando equação do 2 grau |
Date: |
31 May 2014 15:39:02 -0700 |
Olá Julio!Eu intuí que fosse esse o raciocínio...
Tentei colocar em prática a sua sugestão mas não funcionou...
Veja o código e, por gentileza, diga onde estou errando.
#!/bin/bash
echo "##############################################"
echo "######### Cálculo de uma equação #############"
echo "############ do segundo grau #################"
echo "##############################################"
echo "A equação do 2º grau é da forma ax2 + bx + c."
read -p "Informe o valor de a: " a
read -p "Informe b: " b
read -p "Informe c: " c
let Delta=b**2-4*a*c
((Delta < 0)) && {
echo "##############################################"
echo "Delta vale: $Delta "
echo "Valores inválidos."
echo "Não posso extrair raiz quadrada de número negativo." >&2
echo "##############################################"
exit 1
}
x=$(bc <<< "scale=2; (($b*-1)/(2*$a)")
x1=$(bc <<< "scale=2; ($b*-1+sqrt($Delta))/(2*$a)")
x2=$(bc <<< "scale=2; ($b*-1-sqrt($Delta))/(2*$a)")
((Delta == 0)) && {
echo "##############################################"
echo "Delta vale: $Delta "
echo "As raízes são iguais"
echo -e "x=$x"
echo "V={$x;$x}"
echo "##############################################"
exit 1
}
x1=$(bc <<< "scale=2; ($b*-1+sqrt($Delta))/(2*$a)")
x2=$(bc <<< "scale=2; ($b*-1-sqrt($Delta))/(2*$a)")
echo "##############################################"
echo "Delta vale: $Delta "
echo -e "x1=$x1\nx2=$x2"
echo "V={$x1;$x2}"
echo "##############################################"
Veja a saída.
##############################################
######### Cálculo de uma equação #############
############ do segundo grau #################
##############################################
A equação do 2º grau é da forma ax2 + bx + c.
Informe o valor de a: 1
Informe b: 4
Informe c: 4
(standard_in) 2: syntax error
##############################################
Delta vale: 0
As raízes são iguais
x=
V={;}
##############################################
Mais uma vez, agradeço a sua atenção.
Re: Calculando equação do 2 grau, claudiocaldas, 2014/05/31