一道英语数学题A polynomial of degree 3 that has 2,2 and 3 as roots
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一道英语数学题
A polynomial of degree 3 that has 2,2 and 3 as roots can be written as
x3 + a x2 + b x + c where a,b and c are real numbers.Find a + b + c .a.-3
b.-2
c.-1
d.-6
e.0
A polynomial of degree 3 that has 2,2 and 3 as roots can be written as
x3 + a x2 + b x + c where a,b and c are real numbers.Find a + b + c .a.-3
b.-2
c.-1
d.-6
e.0
![一道英语数学题A polynomial of degree 3 that has 2,2 and 3 as roots](/uploads/image/z/8536168-64-8.jpg?t=%E4%B8%80%E9%81%93%E8%8B%B1%E8%AF%AD%E6%95%B0%E5%AD%A6%E9%A2%98A+polynomial+of+degree+3+that+has+2%2C2+and+3+as+roots)
一个根为2,2,3的三次多项式,形式为x^3 + ax^2 + bx + c
求 a + b + c
答:选a
(MATLAB解的:A = [2,2,3];poly(A),多项式是:x^3-7x^2+16x-12)
求 a + b + c
答:选a
(MATLAB解的:A = [2,2,3];poly(A),多项式是:x^3-7x^2+16x-12)
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