Which of the following is/are not a Polynomial? (a) x + (b) 2x-318+1 6) r-3.6+1 (1) 2x2 – 5x
Solution (a, b, d) (a) x2 + 1 = x2 + x- is not a polynomial since the exponent of variable in 2nd term is negative (6) 2x2 – 37x +1 = 2x2 – 3x2 +1 is not a polynomial, since the exponent of variable in 2nd term is a rational number. (c) x2 – 3x + 1 is a polynomial. 2x2 - 5x is also not a polynomial, since the exponents of variable in 1st term is a rational number Hence, (a), (b) and (d) is not a polynomial.
Recent Questions Q.8 If x = 2 + 21/3 + 22/3, then the value of x3 – 6x2 + 6x is- (A) –2 (B) 3 (C) 4 (D) 2. 1.64 Solve 12 -11 + 14 - 2*]<3 35. A particle executes SHM with amplitude of 20 cm and time period of 12s. What is the minimum time required for it to move 17. The domain of definition of function f(x) = log (V x2 – 5x – 24 - x - 2), is (a)(-0, -3] (b)(-0-3] [8,-) (d) None of thes26 A spring of spring constant k is cut into n equal parts, out of which r parts are placed in parallel and connected with ma9. A uniform rod suffers a longitudinal strain of 2 x 10-3. The Poisson ratio of the material of the rod is 0.4. The percentaThe upper half of an inclined plane of inclination is perfectly smooth while lower half is rough. A block starting from rest 26. lonization enthalpy of lithium is 520kJ mol-1. How much enthalpy in joules must be needed to convert all atoms..of Li to (4) X= 1 10. A spring of force constant K is first stretched by distance a from its natural length and then further by distan