Answers edited by Andrew I.

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• Question #df9f8
  
• Does light have mass?
  
• Question #94b54
  
• Question #59763
  
• Stuck with physics ?
  
• What is the equation of the line that is normal to #f(x)= xe^sqrtx # at # x= 2 #?
  
• Using the limit definition, how do you differentiate #f(x)=x^2-4x+23#?
  
• What are complex numbers ?and explain me how to do the four arithmetical operations with them.
  
• What are the values and types of the critical points, if any, of #f(x,y) = x(2-x-y)#?
  
• Question #4886a
  
• Vectors Please Help ( What is the direction of vector A + vector B?)
  
• How do you solve #Cos^2 x - 1/2 = 0# over the interval 0 to 2pi?
  
• In order to conduct an experiment, five students are randomly selected from a class of 20. How many different groups of five students are possible?
  
• What is #f(x) = int 3x-2cscx dx# if #f((5pi)/4) = 0 #?
  
• How do you use the integral test to determine if # sum_(n=3)^(oo) 1/(nlnnln(lnn))# is convergent or divergent?
  
• How do you find the integral of #f(x)=cos^2(x^2)# using integration by parts?
  
• What is the prime factorization of 230?
  
• What is a polar plot?
  
• Question #0c06b
  
• How do you simplify #sqrt(6)/(4+sqrt(2))#?
  
• How do you differentiate #f(x)=cot(1/e^x) # using the chain rule?
  
• How do you integrate #\int \frac{ d x } { 9x ^ { 2} - 16} #?
  
• What is the integral of #(x^2 +2x-1)/(x^2+9)#?
  
• How to calculate this? #int_0^1 log(1-x)/xdx#
  
• What is the antiderivative of #2/(x^2+1)#?
  
• How do you Find exponential decay rate?
  
• Can I get some help finding the x - intercept please? Thanks!
  
• How do you find the power series for #f(x)=1/(1+x^2)^2# and determine its radius of convergence?
  
• Question #87a05
  
• How do you differentiate #f(t)= sqrt(ln(t)) / (-4t-6)^2# using the quotient rule?
  
• How do you integrate #int 1/sqrt(9x^2-18x+13) # using trigonometric substitution?
  
• Question #268d4
  
• How do you integrate #int (4x)/sqrt(x^2-14x+45)dx# using trigonometric substitution?
  
• What is the derivative of this function #y=csc^-1(4x^2)#?
  
• #lim_(x to 0) sin^5(x)/ (x^2+x) sin(x^4)# how should i solve it?
  
• How do you divide #(2x^4+5x^3-3x+1)/(x^2-x+2)#?
  
• How do you express #sin^4theta-cos^3theta # in terms of non-exponential trigonometric functions?
  
• What is #lim_(x to pi) (sin3x)/(sin2x) #?
  
• How do you find the derivative of # arcsin(1/x)#?
  
• What are the different types of spiral galaxies besides barred?
  
• How do you factor #8x² − 72 #?
  
• What is the equation of the tangent line of #f(x)=sin x + sin^2 x# at #x=0#?
  
• How do you integrate #int x^3 /sqrt(4 - 2x^2) dx# using trigonometric substitution?
  
• How do find #int (x^2) /( x^2 + 4) dx # ?