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**hi there**

h r u >?

i am a high school physics teacher, and i write many software in vb.net for simulation and ...........

the qustion

i use newton raphson method to find a root of function but

i want to determine the following

1-is the function has a root or not, and then;

2-how can i find the number of roots, and is it complex or is it real

h r u >?

i am a high school physics teacher, and i write many software in vb.net for simulation and ...........

the qustion

i use newton raphson method to find a root of function but

i want to determine the following

1-is the function has a root or not, and then;

2-how can i find the number of roots, and is it complex or is it real