Question
Verify whether the function f: R – {3} R – {1}, defined by f(x) =(x-2)/(x-3) is one-one and onto or not.
Find the value(s) of k for which the equation x2 + 5 kx + 16 = 0 has real and equal roots.
In Fig. 6.43, the line segment XY is parallel to side AC of Δ ABC and it divides the triangle into two parts of equal areas. Find the ratio AX AB
Maths
March 6, 2019, 8:56 p.m.
Answer
SOving pair of equation 4/x-1 1/y-2 =3 , 7/x-2 -5/y-2=12 by reducing them to a pair of linear equation
Maths
March 6, 2019, 8:35 p.m.
Answer
If the equation (1 m^2)x^2 2mcx c^2-a^2=0 has equal roots then show that c^2=a^2 (1 m^2).
Maths
March 6, 2019, 8:34 p.m.
Answer
The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must take the wheel make in order to keep a speed of 66 kmph?
x=a cos^3 theta and y=a sin^3 theta then prove that dy÷dx=- cube root of y÷x