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Answered a Question in Math
`sqrt(3)sinxcosx=0`
`sqrt(3)/2 sinx(1/2)cosx=0`
`sin(pi/3) sinxcos(pi/3)cosx=0`
`cos(x+pi/3)=cos(2n...

Answered a Question in Math
`sqrt(343x^13)` =`sqrt(7^3 x^13)`
`=(7^2 7.x^12 x)^(1/2)`
(by law of the exponent...

Answered a Question in Math
Given `sin^3xsin3x=sum_(m=0)^n c_m cosmx` (1)
We have to find the value of n.
Now...

Answered a Question in Math
In discuusing the arithmetic series we talk about common difference not the common ratio.
Clearly the terms 2,6,10,.... are...

Answered a Question in Math
When a>0 and b>0
`a^(x+3)=b^1`
`(x+3)loga=logb`
`(x+3)=logb/loga`
or, `x=3logb/loga`
... 
Answered a Question in Math
Actually when a<0 and x takes fractional values the fuction will not remain in R. So we can not take a<0 for all real values of...

Answered a Question in Math
Given problem is `lim_(x>0)(1cos^2(2sinx))/(1cos(2x))`
Now we know that `1cos^2x=sin^2x` and `cos2x=12sin^2x` ....

Answered a Question in Math
given function is y=mod(x1)+2.
We know that mod(x)=x if x>0
and =x...

Answered a Question in Math
Preface As it is clear from its name that it describes in brief "what about your project". It means, what is your goal in preparing...

Answered a Question in Math
In 1 2 3 4 5
out 2 4 7  
From the...