Recently Active Questions

find dy/dx where y=cot-1x/x ...

Solve 1. 4x -3x- 1/2 = 3x+ 1/2 - 22x-1 2. 2x2 : 2x =8:1 ans1 is x=1+- 13 /2 ans 2 is x=3/2 ...

find dy/dx, y=(x-2)/[(x-1)(x+2)] ...

find dy/dx at x=2, y=x2/(1+x2) ...

how to find the no. of maximas in the screen if the wavelength is given? ...

Q1- A: if f(x) is discontinous at a point c and g(x) is continous at c and f(x).g(x) is continous at c then f(x) must be 0 at point c. B: if f(x) and g(x) are two continous function in their domain then f(x).g(x) must be cont ...

*Image* what type of wave is "the wave" shown in above figure? ...

\int_{0}^{2\pi }{e^{\cos \theta }cos(sin\theta )d\theta }= ...

If A(1,p2) , B(0,1), C(p,0) are the co-ordinates of the three points then the value of p for which the area of the triangle ABC is minimum is : A) 1/√3 B) - 1/√3 C) 1/√3 or -1/√3 D) None of these Ans: D ...

Molar heat capacity of water in equilibrium with ice at constant pressure is (A) zero (B) infinity (C) 40.45 kJ K-1 mol-1 (D) 75.48 kJ K-1 mol-1 ...

The following is/are endothermic reaction(s) : (A) Combustion of methane (B) Decomposition of water (C) Dehydrogenation of ethane to ethylene (D) Conversion of graphite to diamond. ...

3 charges 3q,q and Q are placed on straight line with equal separation. in order to make net force on q to be zero.. the value of Q will be???? ...

RCM (28) A heat pump is used to draw water from a well.The temperature of the water is 15°C and that of the atmosphere is 40°C.If the amount of water drawn is 10kg through a depth of 12m, calculate the amount of heat suppli ...

A student appears for test I, II and II. The student is successful if he passes either in tests I and II or test I and III. The probabilities of the student passing in tests I, II and III are p, q and 1/2 respectively. If the ...

The probability that a man aged x years will die in a year is p. The probability that out of n men M1, M2, M3, . . . . . . , Mn each aged x years, M will die and be the first to die is a. 1/n2 b. 1-(1-p)n c. 1/n2[1-(1-p)n] d. ...

Column I 1. A fully discharged capaciter battery of constant Emf. is connected to the end of the wire 2. The wire is rotated about one end of its length with constant angular velocity in a uniform magnetic field perpendicular ...

1. Statement-I : The sensitiviry of a moving coil galvanometer is increased by placing a suitable megnetic material as a core in side the will. Statement-II : Soft iron has ligh megnetic permeability and can not be easily meg ...

pls solve it *Image* ...

If f(x)=(x-α)n.g(x) then we always have f(α)=f'(α)=f"(α)=...=fn-1(α) where f(x) and g(x) are polynomial functions.Provided that f(x) has rational coefficients Q1 If f(x) is of deg 4 and touches x axis at ( 3 ,0).Find sum ...

The threshold frequency for certain metal is 3 × 10^14 Hz. If light of frequency 8.2 × 10^14 Hz is incident on the metal, predict the cut off voltage for photoelectric emission. ...

A straight wire carries a current of 3 A. Calculate the magnifield of the magnitic field at a point 10 emp. away from the wire. ...

(1) Lim \frac{n}{10^{n+1}}= n-->∞ ...

Q1. The value of ^{100}C_{0}\; ^{200}C_{100} - ^{100}C_{1}\; ^{199}C_{100} + ^{100}C_{2}\; ^{198}C_{100}-^{100}C_{3}\; ^{197}C_{100}+.......+^{100}C_{100}\; ^{100}C_{100} Q2. If \left|az+b\bar{z}+c \right| = \alpha \left|a \r ...

(1) The No. of (+ve) Integral solution of the equation 7x^{2}-2xy+3y^{2}=27 ans = 1 ,2 0, None. I am very sorry for posting wrong question in my previous post. ...

Q1 if tehre were three possible values (-1/2,0,1/2) for spin quantum number s,then the number of elements in fourth preiod of periodic table would be ? Q2 what indiactor is uded fr titration of 0,1 M KH2BO3 and 0.1M HCl ? (an ...

Name two factors which determine the choice of a communication channel. Explain the use ofcoaxial cables as a communication channel with the help of its simple diagram. What are the advantages of coaxial cable? ...

State the principle of potantionant. ...

http://epaper.hindustantimes.com/ArticleImage.aspx?article=05_02_2010_008_013&mode=1 ...

find the conjugate hyperbola of xy-2x-4y+4=0 ...

1. Does Fehling’s solution oxidize Benzaldehyde? Or it oxidizes aliphatic aldehydes only? 2. .Aldehyde when reacts with fehling Solution gives a) white ppt b) red ppt c) green ppt d) blue ppt 3. Which of the following gives ...