or
Bishesh Gautam asked a question

Here, the given equation of parabola is y2= 8x.

The equation of tangent to the parabola y2=8x is,

y= mx + 2/m

This tangent passes through the point (-2, 3)

So, 3 = -2m + 2/m

or, 3m + 2m2 = 2

or, 2m2+3m - 2= 0

or, 2m2 + (4 - 1)m -2 = 0

or, 2m2 + 4m - m - 2 = 0

or, 2m(m + 2) - 1(m+2) = 0

or, (m + 2) (2m - 1) = 0

Either, Or,

m = -2 m = 1/2

Required angle is,




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Mattrab Community - SXC asked a question

Log2aa=x    then, a=(2a) ......(1)

Log3a2a=y    then,2a=(3a)y ......(2)

Log4a 3a=z  then, 3a=(4a)z ......(3)

So, 

a=(2a)x  [from (1)]

Or, a=(3a)xy    [from(2)]

Or, a=(4a)xyz     [from(3)]

Multiplying both sides by 4a,

4a.a=4a.(4a)xyz  

Or,(2a)² =(4a)xyz + 1 

Or,(3a)2y =(4a)xyz+1 

Or,(4a)2yz =(4a)xyz+1 

Or, 2yz = xyz+1 .proved.



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Bhawana Yadav asked a question

2078-10-20
दाङ, नेपाल।

वरषीय सुशील भणडारीले आफनै गाउँमा सफलतापूरवक
सवचालित कार बनाएका छन ।दिएको जानकारी अनुसार
कारमा सुशीलले समाचार अधिकारीहरूलाई अनय कचचा
पदारथ जसता उपलबधयसको कषमता लगभग 15-20 किमी
/ घणटा छ। यो परियोजनाले उनलाई करिब रु.95,000
अवधि-चार महिना; भणडारी भनछन, ‘ किनन सकने गरी थप गरन
सकौं कम मूलयमा।”


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