SHELL PROGRAM

QUADRATIC EQUATION

echo"Enter a value:"

read a

echo "Enter a value:"

read b

echo "Enter a value:"

read c

x1=echo "scale=7;(-$b+sqrt($b^2-4*$a*$c))/(2*$a)"|bc'

x2=echo "scale=7;(-$b-sqrt($b^2-4*$a*$c))/(2*$a)"|bc'

echo $x1

echo $x2

SUM OF CUBE OF INDIVIDUAL DIGITS OF A NUMBER

echo"Enter a number:"

read n

t=$n

s=0

while[ $n -gt 0 ]

do 

r='expr $n % 10'

s='expr $s +$r\*$r\*$r'

n='expr $n / 10'

done

echo"The sum of cube of individual digits of $t is $s"