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here goes my doubt i read it in arihant according to complex numbers *Image* *Image* *Image* now consider *Image* *Image* please explain last two steps ...

1. I=\int cosh^2(8x+5)dx 2. I=\int \frac{dx}{(x^2+x+1)} 3. I=\int\frac{(2+3x^2)dx}{[x^2(1+x^2)]} .. 4. I=\int\frac{(x^2-1)dx}{(x^4+3x^2+1)arctan[(x^2+1)/x]} 5. I=\int \frac{(\sqrt{a^2-x^2})dx}{x^4} plzz help me m a begginer n ...

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1) If f(x) = x/1+((log x)(log x)(log x)(log x)..... \propto ). for all values of x \epsilon [1 , \propto ) ; then \int_{1}^{2e}{f(x)dx} is equal to : a) e2 - 1/2 b) e2 + 1/2 c) e2 - 2e/2 d) none of these --------------------- ...

relaxing, i came about this term!! GAMMA FUNCTION!! can anyone explain its meaning??? ...

1)gallium forms GaCl2. this is because a)large size of gallium b)very high hydration energy of Ga(III) ion. c)gallium can form both univalent and trivalent ions. d) high electronegativity of chlorine. 2)which is stronger redu ...

*Image* Ques 7) Whcih equilibrium is not rapid at room temperature ? *Image* Ques 8) *Image* Consider the following energy profiles where A reacts with reagent B and gets converted to C, and B reacts with same reagent (R) und ...

∫x2/(xsinx+cosx)2dx ...

Be a diode 2 remove negative thnking ,a transistor 2 amplify character, resistor 2 drop bad habits, capacitor 2 store gud thoughts kyonki jeena"EC" ka naam hain... ...

p-V diagram of an ideal gas enclosed in a container is shown in fig. How the work done by the system on the surrounding is changing i.e., whether it is continuosly increasing , decreasing etc? *Image* ...

COMPREHENTION There is a point 'p' inside an equilateral triangle ABC of side d whose distance from the vertices is 3,4,5 . Rotate the triangle, through 60° about C . Let A go to A' and P to P'. 1) The area of triangle PAP' ...

had a problem in this all through class 11 so i memorized the result. This was the only result that i memorized in physics in 11 and LOL it proved fruitful!! But i hate the concept of memorizing so i hpe my doubt will be answ ...

∫√sin(x-a)/sin(x+a)dx ...

large metal sheet carries an electric current along its surface. Charge per unit length is (lamda) Magnetic field near the metal sheet is ; a) (mu) (lamda)/2 b) (mu) (lamda)/2 (pie) c) (mu)(lamda) d) (mu)/2 (lamda) (pie) *Ima ...

*Image* the first qsn.. answer given is d ...

The power transferred through any cross section of a string in a standing wave is zero. True or False ...

*Image* the metallic ring and metallic disc problem ans given (metallic ring sum : d) (metallic disc sum :b) ...

If |z|2 + A(bar) z2 + A z(bar)2 + B(bar) z + B z(bar) + c=0 represents a pair of straight lines intersecting with angle θ, then the value of |A| is- a) tanθ b) cosθ c) secθ d) secθ/2 Sorry for the inconvenience, the late ...

*Image* (q. no 52 only) (ans given is B,D) ...

Assume that a cloud of tiny water droplets is suspended (uniformly distributed and at rest) in air, and consider a rain-drop falling through them. Assuming that the rain-drop initially is of negligible size and that when it h ...

*Image* number 23 ans given is c ...

show that \int_{0}^{\pi /2}{sin\theta logsin\theta }d\theta = log\frac{2}{e} ...

of the following complexes those which are conductors in aqueous solutions are? 1)CrCl3.3NH3 2)CrCl3.4NH3 3)CrCl3.5NH3 4)CrCl3.6NH3 this one is multiple correct choice. ...

Discuss the continuity of the function f(x)= x3+x2+1 ...

IF ∫(sin 3θ + sin θ)esin θ cos θ dθ = (Asin 3θ + Bcos 2θ + Csin θ + D cos θ + E)esin θ + c find A, B , C , D , E ANS---> -4 , -12 , -20 , 0 , 32 respectively ...

Find the no. of ways of arranging 5 identical green, 4 identical blue and 3 identical yellow balls in a row such that none of the identical balls form a block (or in other words...comes serially :-). ...

two concentric and coplanar coils have radii a & b (>>a) as shown in figure. Resistence of the inner coil is R. Current in the outer coil is increased from o to i, then the total charge circulating in the inner coil is: ...

1. If y= cosec x (cot–1x) thendy/dx a. x/ 1-x2 b) -x/ 1+x2 c) x/ 1+x2 d) None 5. If A and B are such events that P(A) > 0 and P(B) ≠1 then P( A/B ) is equal to a) 1– P(A∪B)/P(B) b) P(A)/P(B) c)1-P(A)/P(B) d)1-P(B/A ...

Please tell me how to do this type of problems. Consider the situation shown. A small disc of mass 1 kg is released from the top of a fixed wedge which is inclied at 60° to the horizontal. The coefficient of friction of surf ...

*Image* A block of mass 'm' is attached to a spring of constant k= 4mg/L and natural length 10L. The system is released from rest, L above the ground. Q) Till the block reaches its lowest position for the first time, the time ...