" (ii) "x^(20)

x^(18) + x^(12)=0, x^(20) + x^(14)= 0

(d^(20))/(dx^(20))(2cos x cos3x) is equal to (a) 2^(20)(cos2x-2^(20)cos3x)(b)2^(20)(cos2x+2^(20)cos4x)(c)2^(20)(cos2x+2^(20)sin4x)(d)2^(20)(sin2x-2^(20)sin4x)

If x is the root of the equation x^(2) -ix -1 =0 , then The value of x^(20) + 1/x^(20) may be

If x is the root of the equation x^(2) -ix -1 =0 , then The value of x^(20) + 1/x^(20) may be

An elements has three isotopes X^(20), X^(21) and X^(22) . Percentage abundance (mole %) of X^(20) is 90 and average atomic mass of X is 20.18 . Select correct option (s) -

An elements has three isotopes X^(20), X^(21) and X^(22) . Percentage abundance (mole %) of X^(20) is 90 and average atomic mass of X is 20.18 . Select correct option (s) -

if x+(1)/(x)=1 then x^(20)+x^(30)+x^(40)

The coefficient of x^(20) in (1 + 3x + 3x^(2) + x^(3))^(20) ,I s