तत्व x प्रबल धन-विद्युती व y-प्रबल ऋण-विद्युती है । इनके बीच बना बन्ध होगा -
(i) `x^(+)y^(-)`
(ii) `x-y`
(iii) `x rarr y`
(iv) `x larr y`

(i) x=14-y. Find x ,If y=8 . (ii) y=x-2 . Find y ,if x=7 .

If x=3 and y=4 , find the value of (i) 3x+2y (ii) 4x+3y (iii) 18xy (iv) (15x)/(12y)

|[y+z, x, x] , [y, z+x, y] , [z, z, x+y]|= (i) x^2y^2z^2 (ii) 4x^2y^2z^2 (iii) xyz (iv) 4xyz

Given x = 2 - 3i and y = 4 + i . Find (i) xy " "(ii) x + y " " (iii) x - y " "(iv) x/y " " (v) (barx)/y " "(vi) (x-y)^(2)

Draw the graph for the following: (i) y=2x (ii) y=4x-1 (iii) y=((3)/(2)) x+3 (iv) 3x+ 2y =14

lt_ (y rarr0) ((x + y) csc (x + y) -x cos ecx) / (y)

Verify : (i) x^3+y^3=(x+y)(x^2-x y+y^2) (ii) x^3-y^3=(x-y)(x^2+x y+y^2)

lim_ (x rarr0) ((x + y) sec (x + y) -y sec y) / (x)

Find (x+y)-:(x-y), if (i) x=2/3, y=3/2 (ii) x=2/5, y=1/2 (iii) x=5/4, y=(-1)/3

For each of the graphs given in Fig. 4.5 select the equation whose graph it is from the choices given below:(a) For Fig 4.5(i)(i) x + y = 0 (ii) y = 2x (iii) y = x (iv) y = 2x + 1 (b) For fig 4,5(ii)(i) x + y = 0 (ii) y = 2x (iii) y = 2x + 4 (iv) y = x - 4