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relations +2 maths

+2 maths

If the altitudes of a triangle are equal, prove that the triangle is equilateral.

• the half life of a first order reaction is 20 minute calculate value of k

Find the derivative of the function given by f(x) = (x)

Find the derivative of the function given by f(x) = sin(x squared)

show that the modulus f: R - R, given by f(x) = modulus x, is neither one to one nor onto, where modulus x is positive or 0 and modulus x is -x

Prove that cos4x+cos3x+cos2x/sin4x+sin3x+sin2x=cot3x