Math Is Fun Forum

I need scientific reasons to proof my solution that is right and not wrong,

because the the Associate Dean for Academic Affairs((he is an professor in mathematics)) and the Dean of the university
say to me that your answer was wrong????????????

please help me they all against me, they say the end of the result is right but when I said ( Limit R.H.S = limit L.H.S) that wrong and you must write it (LIMIT L.H.S = f(0) )  .

please Help me!  Put yourself in my place, what would you do with them?

please ! I'm weak and they are Dr and  Professor and lecturer all against me or against one that maybe wrote a simple mistake

How is that be?

if the Limit does not exist can we say just k^2+3k-3 = 0  (just make it equal to zero then find the solution it if can be)

or we can't?...................(1)

so now I understand.... the limit does not exist because x approaches to 0

.I'm afraid maybe he will change his answer again and tell me like what did you told me and he will say you must write in your paper (there is no way to find k ...............(2)  ) (

thank you very much

do you mean when I have x in the second H.S I can't tell (limit L.H.S = limit R.H.S)
I have to say ( f(0) = R.H.S)

cause when we will have x inside this so : (xk^2+k-3)

and when we will take the limit L.H.S = Limit R.HS s0 ..
limit x+1 = limit xk^2+k-3       ((x apro to 0)
1= 0 + k- 3
k=1+3 = 4

is that right? or it will be wrong...

just tell me this please..

no no no ,

He is said my solution is wrong cause I toke  L.H.S = R.H.S to find k value
he said you must write it like this  lim L.H.S {which x+1} = f(0) {which it K^2+3k-3)

not Lim L.H.S  {which x+1} = Limit R.H.S which it K^2+3k-3}

you do understand what he is saying ...

I talked and discussed to him today but he changed his answer  to this! :-  see this is my sol in red color and his solution in blue color

He said you must take f(0) = R.H.S then find k not L.H.S=R.H.S,

what is that crazy man talking about????????  even he is right but it is the same result????
and he didn't teach us to do that I swear in god!!!

Hi, can you please teach me ho to draw a qraph for this? and how to find a full solution in an
actual way?

please we have a two more exams and we always get like these questions ...

bobbym , the teacher said to me when I asked him : we chose the R.H.S = R.H.s and it will be  k value = {-1,4}
when only we see have (≥) and (<)
not = and ≠ , cause in (≠ and = )
we chose the equation that have (=) and solve it

he said that to me

cause he told us when you see x  ≠ 0 , you ignore the equation while you find k value

can you give me justification SO I can talk to him cause this question is from 10 mark too

at least I can take this 10 marks cause he give me 0

please help me with that

but he say we can't take the L.HS cause the f(x) = x+1 , x ≠ 0,
because x  ≠ 0, we just use the R.H.S

is he wrong?

it is the same k^2 + 3k -3