Finde the pts on the curve x²/4+y²+25=1 at which tangent is paralle to x-axise and y-axise
two simple harmonic motions are represented by the equations x 1=20 sin , x 2=40 sin what is the ratio of their amplitudes
the 7th term of an arithmetic progression is 4 times its second term the twelfth term is 2 more than three times of its fourth term. find the progression