Math Is Fun Forum

yesss but that what my sol :

im R.H.S = lim L.HS
then
limx->0    x^3 +1 = limx->0      k^2 + 3k -3
.
.
. k value = {-1,4}

is that right?

............................................... so I'm not sure, but the teacher said it is wrong cause you must take just (  k^2 + 3k -3=0)
then find it , is that  the right ?? or what....

yes I'm saying that ,
and I asked you to solve it because the teacher don't have a constant solution for this question!
I saw a student got 10 marks from 10 ( it is mean his answer if full Correct)
but his solution was wrong! it was (-∞,1] U (3,∞) !! and not just him there was some of them .... !
they had 10 marks and me just 1!

cause I use my own way when I answer inequalities like these, my teacher his way to solve is complicated and sometimes be fully wrong!
he just give us 3 example in the copybook and it was in a wrong answer! how can I use his way that I don't like it and very complicated ...

his important thing is the student use his way and he will give a full mark or 9 or 8 !!!

and me he give me just 1

3) How much should be deducted for your answer which was incomplete? How much partial credit is due you?

I don't really know how much but what I know I don't deserve 1! what make me angry is he did that deliberately!

and I know but he use partial credit , that is his way and he must use his way correctly without injustice

I'll read this another time , but now please give me the results! please

then what is the slop of this x+2y=3

is it 2y=-x+3?
so y= -1/2x + 3/2
is the slope -0.5?

no that is the problem

thank you

| | like these ,

I really forget how to find the slope in this situation, I just know : the slope = Δy/Δx, I know that law but I don't understand it ,, anyway

second : I want to know why any parallel lines will have same slope? I need to understand this and to take advantage from this in the future ...

I really this all of the details about the question,, any way forget it I'll find an answer but please answer this one for me :-

(find the equation for line passing through the point (1,2) and parallel to the line : x+2y=3?)

but I got this while I was trying to solve an inequality : 

it make me feel confused with this x^2 + 1

I don't know how to end my solution

do you know absolute value waste my time, it is more than 3 days

I have to study limit now and Function ....

that is because of our teacher!!! what can I do for my country if I can't keep it on and hurry up,

I'm very slow

sorry I don't understand what is copied