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Loss occurs when X<0.
thank youin first one
after finding a put it in the equation and find its derivative,put the derivative as 0 so that u find the stationary values of x,now do double derivative and put these values of x and see if points are a minimum if they are then put in the following step if one is then put that and forget the other,put the values in f(x) and see if u get negative answer which u shudnt as f(x) stays positive !
this proves that the graph never went beyond x axis and was always +,u use stationary values to find the values of x for minimum points because these values have f(x) at the lowest value so if they dont give u minus nothing will
U will get a cubic equation so u will need to solve it
For the other one try it urself it really is straightforward,u need to use those different forms of expressing complex no. to get w then its quite easy ! Ill INSHAALLAH solve it tomorrow or soon as for now im really out of time sorry
thank you very very much
ummm...its okay you don't have to do question 5 .....i got it nowin first one
after finding a put it in the equation and find its derivative,put the derivative as 0 so that u find the stationary values of x,now do double derivative and put these values of x and see if points are a minimum if they are then put in the following step if one is then put that and forget the other
this proves that the graph never went beyond x axis and was always +,u use stationary values to find the values of x for minimum points because these values have f(x) at the lowest value so if they dont give u minus nothing will
U will get a cubic equation so u will need to solve it
For the other one try it urself it really is straightforward,u need to use those different forms of expressing complex no. to get w then its quite easy ! Ill INSHAALLAH solve it tomorrow or soon as for now im really out of time sorry
That was rele well explained! Thanx
Q5. The 2 points r (3,6) and (0.75,3) and the distance is 3.75 units.. right?
It depends upon which 2 shapes u r using..
which variant ?
Q7.. when u sketch the curve, from 0 to 90 it curves down then bends upwards.. this bending shd mean that the curve doesnt have an inverse but if u stop at 90 degrees, it can have an inverse... so answer is 90.(am sure u didnt get what i meant but try,i think it is considered a fact)
)
Ya rahmaaa thank youuQ7.. when u sketch the curve, from 0 to 90 it curves down then bends upwards.. this bending shd mean that the curve doesnt have an inverse but if u stop at 90 degrees, it can have an inverse... so answer is 90.(am sure u didnt get what i meant but try,i think it is considered a fact)
Q10.. ii) minimum point has x=3 as the line of symmetry.. and since lower limit is zero, u multiply 3 by 2 (they said has a line of symmetry) if they would have said "has an inverse" the answer would have been 3.
iii) The minimum point has y coordinate as -5, so f(x) >-5 , then when u substitute x=0, u get y = 13 as upper limit.
(Math is difficult to explain when i dont have the person in front of me LOL
.. hahaha bas msa shr7ty 7elw 
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