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integral dx/(a^2+x^2)^7/2

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i am from puducherry

i am in

the ans is c .if correct please nudge me for the solution.

integration of cos^2x/squar rootsinx

take t^2=sinx

2t dt=cosx

integ cos^2x/squar rootsinx =integ 4t^2/t

=2t^2

=2sinx

it passes through i+2j-4k

its vector eq of the plane is i+2j-4k +

(2i + 3j + 6k) +

(-2i + 3j + 8k)

the cartesian eq is 3x - 14y + 6z +49=0

An N-type semiconductor (N for Negative) is obtained by carrying out a process of doping, that is, by adding an impurity of valence -five elements to a valence-four semiconductor in order to increase the number of free (in this case negative) charge carriers.

A P-type semiconductor (P for Positive) is obtained by adding a certain type of atoms to the semiconductor in order to increase the number of free (in this case positive) charge carriers.

Addition of non-symmetrical reagent to a non-symmetrical alkene, then two isomeric products that are constitutional isomers can be obtained. For example, the reaction of HCl with propene gives 1-chloropropane and 2-chloropropane.

Normally, 2-chloropropane is the major product.
Since one product is favoured over the other, the reaction is said to be regioselective.
If 2-chloropropane were the only product then the reaction is said to be regiospecific.

hey this a question from my reso test series and they have given me the ans as 40km/s. plzzz help

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