Answers edited by Jake M.

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• What is the surface area of the solid created by revolving `f(x) = e^-x+e^(x) , x in [1,2]` around the x axis?
  
• Consider the function f(x)=x³+x²-6x+1. Find all the points on the graph of f where the tangent line has slope of -1?
  
• Find the value of `(dr)/dt` at `t=0` if `r=(theta^2 +7)^(1/3)` and `theta^2t + theta =1`?
  
• What is the range of the function `y=-sqrt(4x^2 + 2x^4 +5)`?
  
• Show that? `(P(N', n))/(P(N,n)) ~~ ((N')/N)^n` `(N', N, n) in ZZ^+` `(N', N )">>" n` `P(x,y) = (x!)/((x-y)!)` Stirling Approx allowed
  
• Question #51bdf
  
• For what values of x is `f(x)= e^x/(x^2-x) -e^x` concave or convex?
  
• How do you integrate `int 1/sqrt(9x-12sqrtx-1)` using trigonometric substitution?
  
• The SI unit of the coefficient of areal expansion is?
  
• How do you solve `(9z+5)/4+18<26` and graph the solution on a number line?
  
• Question #50dea
  
• Can anybody please solve it?
  
• Shehkar pulls 31 coins out of his pocket. each coin is either a dime or a quarter. if he has a total of 5.95, how many dimes does he have?
  
• Question #a5322
  
• Question #c0954
  
• Kingda ka at six flags has a 55m drop. The rollercoaster has a mass of 8000kg. How fast it be travelling when it reaches the bottom?