`1/16x+1/15y=9/20; 1/20x-1/27y=4/45`

If x=9^(1//3)xx9^(1//9)xx 9^(1//27)xx….,y=4^(1//3)xx-4^(1//9)xx 4^(1//27)x…., and z=Sigma_(r=1)^(oo) (1+i)^(r) then arg (x+yz) is equal to

If x=9^(1/3) 9^(1/9) 9^(1/27) ......oo y= 4^(1/3) 4^(-1/9) 4^(1/27) ...... oo and z= sum_(r=1)^oo (1+i)^-r then , the argument of the complex number w = x+yz is

[16x^(2)-8x+1=0,100y^(2)-20y+1=0

6x-9y-20z=-4 4x-15y+10z=-1 2x-3y-5z=-1

Use matrix methocd to solve the following system of equations: {:(6x - 9y - 20 z = -4), (4x - 15 y + 10z = -1),(2x - 3y - 5z = -1):}

The locus of the mid-point of the chord of contact of tangents drawn from points lying on the straight line 4x-5y=20 to the circle x^2+y^2=9 is : (A) 20(x^2+y^2)-36+45y=0 (B) 20(x^2+y^2)+36-45y=0 (C) 20(x^2+y^2)-20x+45y=0 (D) 20(x^2+y^2)+20x-45y=0

If 20x^2-30x+1=0 , then what is the value of 25x^2+1/(16x^2) ? यदि 20x^2-30x+1=0 है, तो 25x^2+1/(16x^2) का मान क्या होगा ?

If y= x^(1/3).x^(1/9).x^(1/27)...oo then y=?