T-QAD Day 3 @ 15 April 2020

Question 1 : Q1/D3/150420

Solve the simultaneous equations  

2x + y = 1 and 2x² + y² +xy = 5.

Give your answers correct to three decimal places.

                                                                                                         (5 marks)

Question 2 : Q2/D3/150420

Solve the following simultaneous equations:

2x – y  – 3 = 0    and        2x² – 10x  + y + 9 = 0

                                                                                                         (5 marks)

Answers T-QAD 14 April 2020

Check your answer and fill in the form to record your marks.

                 MyMarks

1.  (a) 5                               (1 mark)

      (b) { -3, -1, 1, 3 }         (1 mark)

               Review :

               (a) the object of -1 is 5

               (b) Range is the set of images

2.  (a)   {w, x, z}                            (1 mark)

     (b)   Many to one relation        (1 mark)

Review :

               (a)  Range is the set of images

               (b) Object 2 and object 3 have the same image, x. This is many to one relation.