Answers edited by Tony

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• What is the domain and range of #f(x) = 2x²-3x-1 #?
  
• Calculate the wavelength of the first line in lyman series of the hydrogen spectrum (R = 109677 cm-1) how to do this?
  
• The tangent to #y=x^2e^x# at #x=1# cuts the #x# and #y#-axes at #A# and #B# respectively. Find the coordinates of #A# and #B#.?
  
• How do you find the equation of the line that goes through (3, -5) and (5, 4)?
  
• A triangle has corners at #(6 ,4 )#, #(7 ,6 )#, and #(3 ,3 )#. What is the area of the triangle's circumscribed circle?
  
• How do you find the sum of the finite geometric sequence of #Sigma 2(4/3)^n# from n=0 to 15?
  
• Question #83510
  
• How does the smoothness of a surface affect the size of friction?
  
• The line (k-2)y = 3x meets the curve xy= 1 -x at two distinct points, Find the set of values of k. State also the values of k if the line is a tangent to the curve. How to find it?
  
• Find 4 values of following in exponential forms ?
  
• Question #ecc2a
  
• Question #cef51
  
• Question #d2a0e
  
• A particle is moving with constant speed v on a circular path of r radius when it has moved by angle 60°, Find (i) Displacement of particle (ii) Average velocity (iii) Average acceleration?
  
• Given that (-3,7) is on the graph of f(x), find the corresponding point for the function f(x+5)?
  
• How do you plot #-4+4i# and find its absolute value?
  
• How do you find the LCM of #16x^3yz^3# and #14z^6xy^4c#?
  
• How do you divide #\frac { \sqrt { - 48} } { \sqrt { 4\sqrt { - 3} } }#?
  
• Question #ea371