Messages posted by anksince92@gmail.com

d/dx (tan^2 x tanx) it can be weitten like this....

apply product rule ..

= tanx ( 2tanx sec ^2x)+ tan^2x(sec^2x)

= 3 tan^ 2 x sec^2 x =ans .....

how to check continuity and diffrentiability of a func about any points..

ans-

(b^2 - a^2)/( b^2 + a^2)

sinA + sinB=2sin(A+B)/2cos(A-B)/2

cosA+cosB=2cos(A+B)/2cos(A-B)/2

divide both u get tan(a+B)/2

then u can use cos2a formula in terms of a+b and in terms of tan to get the abv ans

they are not considered func isomers due to the absence of a distinct func gp..they r rather categorised under cyclic isomers ..coz of the same degree of unsaturation...

there will be 13 isomers including positional ,chain + stereoisomers u can sit and check all the posibilities by making all possible skeletal frame work of the carbon compound and then adding the cl to resp places.....

yes they can be !!

ans is a

coz flux=E.dS = E.s.cos(theta)

area vector is perpendicular to the surface ,angle between s and E=0 deg

so flux= E.s.(1)

=E.pie R^2

thru the surface u have asked.....

there r 5 pts on the circle of radius a and four are used to draw a rect. hyperbola to show that the centre of the hyperbola lies on a circle of radius a/2

i'm weak in mechanics how do i improve ...i know the theory but i fail in applying them correctly in questions and how do i concentrate on physics as i keep getting distracted

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