Solve the inequality 3x+2x-2>1.
Use Newton’s method to find a better approximation to the root of logex-sinx=0, given that the roots is near x=2. (x is a radian) Give your answer to 2 decimal places.
Find ddx(1+x2) tan-1x. (A) 2x tan-1x (B) 2x1+x2 (C) 1+x21-x2 (D) 1+2x tan-1x
∫dx4+9x2= (A) 13 tan-12x3 (B) 16 tan-13x2 (C) 16 tan-12x3 (D) 13 tan-13x2
a) Evaluate ∫01dx2-x2.
b) Solve 23-x≤1
Tap water at 24°C is placed in a fridge-freezer maintained at a temperature of -11°C. After t minutes the rate of change of temperature T of the water is given by dTdt=-k(T+11) (i) Show that T=Ae-kt-11 is a solution of the above equation, what A is a constant. (ii) Find the values of A. (iii) After 15 minutes the temperature of the water falls to 10°C. Find, correct to the nearest minute, the time taken for the water to start freezing. (Freezing point of water is 0°C).
Differentiate loge(x3+1) with respect to x. Evaluat ∫03dx9+x2
limx→0tan 3x2x is equal to : (A) 0 (B) 1 (C) 3 2 (D) 2
Find ∫x1+xdx using the substitution x=u2-1 Evaluate∫0π6cos23x dx
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