Answers edited by sente

• Back to user's profile
• Next
• How do I find the natural log of a fraction?
  
• How do you show that integration of #x^m e^(ax)dx = (x^m e^(ax) )/a - m/a int x^(m-1) e^(ax) dx#?
  
• If the zeros of #x^5+4x+2# are #omega_1#, #omega_2#,.., #omega_5#, then what is #int 1/(x^5+4x+2) dx# ?
  
• What are the all the solutions between 0 and 2π for #sin2x-1=0#?
  
• How do you simplify #-2/(3-i)#?
  
• How do you graph #g(x)= log_6 x#?
  
• Question #d2752
  
• How do you show that if #a+b=0#, then the slope of #x/a+y/b+c=0# is #1#?
  
• How do you simplify # cos (pi - theta)#?
  
• Solve for #x in RR# the equation #sqrt(x+3-4sqrt(x-1))+sqrt(x+8-6sqrt(x-1))=1# ?
  
• How do you use the ratio test to test the convergence of the series #∑(2k)!/k^(2k) # from n=1 to infinity?
  
• Question #de166
  
• If # n = 1/4#, what is the value of #(2n-5)/n#?
  
• Is there a systematic way to determine the number of numbers between 10 and, say, 50, divisible by their units digits?
  
• Find the area of the shaded region (green) knowing the side of square is #s = 25 cm#?
  
• Question #b5ab2
  
• How do you find all solutions to #x^5+243=0#?
  
• In the triangle embedded in the square what is the measure of angle, #theta#?
  
• How do you simplify #(sina+tana)/(1+cosa)#?
  
• What is the derivative of #f(x) = (lnx)^(x)#?
  
• How do you express #sqrt(-4/5)# as a product of a real number and i?
  
• How do you simplify # (x^(1/3) + x^(-1/3))^2#?
  
• How do I graph the ellipse with the equation #x^2+4y^2-4x+8y-60=0#?
  
• Suppose there are m Martians & n Earthlings at a peace conference. To ensure the Martians stay peaceful at the conference, we must make sure that no two Martians sit together, such that between any two Martians there is at least one Earthling?(see detail)
  
• What is #1/3# of #18#?
  
• How do you solve #log x + log (x-3) = 1#?
  
• Question #98d02
  
• What is #lim_(x->0) (x^3+12x^2-5x)/(5x)# ?
  
• How do you integrate # 1/(1+e^x) # using partial fractions?
  
• How to write the first four terms of the Maclaurin series for the function f(x)=(x+1)e^(2x) given that ?
  
• Among all pairs of numbers with a sum of 101, how do you find the pairs whose product is maximum?
  
• Question #5d611
  
• A composite geometrical shape is made up of a square, equilateral and right triangles. Calculate the area of hatched triangle?
  
• Question #a71e9
  
• Question #6d8e6
  
• What are complex numbers?Thanx.
  
• Question #c5432
  
• Find the matrix #A# for the linear transformation #T# relative to the bases #B = {1,x,x^2}# and #B' = {1,x,x^2,x^3}# such that #T(vecx) = Avecx#?
  
• How do you convert #(3, -3sqrt3)# to polar form?
  
• How do you find the number of terms in the following geometric series: 100 + 99 + 98.01 + ... + 36.97?
  
• How do you simplify # (2+2i)/(1+2i) # and write in a+bi form?
  
• Determine the interval whereby 6x^2 + 44x + 70 ≥ 0?
  
• A 45-45-90 triangle has a hypotenuse of length 14 units. What is the length of one of the legs?
  
• How do you simplify #((2n)!)/(n!)#?
  
• How do you differentiate #p(y) = y^2sin^2(y)cos(y)# using the product rule?
  
• Question #db818
  
• Question #2b5bb
  
• Question #9c5a0
  
• Question #e07a4
  
• Question #0f6bd
  
• How do you solve #tan^2 x=tan x#?
  
• What is the product of #2x^2+7x-10# and #x+5# in standard form?
  
• What is #(-7pi)/8 # radians in degrees?
  
• How do I perform matrix multiplication?
  
• Question #a43bd
  
• How do you verify #(cosX+sinX)/(cscX+secX) = (cosX)(sinX)#?
  
• In 1/6=1.6666..., repeating 6 is called repeatend ( or reptend ) . I learn from https://en.wikipedia.org/wiki/Repeating_decimal, the reptend in the decimal form of 1/97 is a 96-digit string. Find fraction(s) having longer reptend string(s)?
  
• How do you solve #120=100(1+(.032/12))^(12t)#?
  
• How do you perform inversions for #y = x^2 and y = x^4?# Is #(dx)/(dy)# from the inverse #1/((dy)/(dx))?#
  
• Write the equation of a function with domain and range given, how to do that?
  
• 6 equal circular discs placed so that their centres lie on the circumference of a given circle with radius (r), and each disc touches its 2 neighbours. What is the radius of a 7th disc placed in the centre which will touch each of the each existing ones?
  
• Is #sqrt33# an irrational number?
  
• What is 0.09 (repeating) as a fraction?
  
• What is #int_0^pi (lnx)^2 / x^(1/2)#?
  
• What is the frequency of #f(theta)= sin 3 t - cos 21 t #?
  
• Does #a_n=1/(n!) # converge?
  
• Is #sqrt(2)^(sqrt(2))# rational ? And #sqrt(2)^(sqrt(2)^sqrt(2))#?. And #sqrt(2)^(sqrt(2)^(sqrt(2)^cdots))#?
  
• How do you prove #sec^2 x - cot^2 ( pi/2-x) =1#?
  
• The center of a circle is at (0,0) and its radius is 5. Does the point (5,-2) lie on the circle?
  
• How do you use DeMoivre's Theorem to find #(1+i)^20# in standard form?
  
• What is the value of #1/n sum_{k=1}^n e^{k/n}# ?
  
• The movement of a certain glacier can be modelled by d(t) = 0.01t^2 + 0.5t, where d is the distance in metres, that a stake on the glacier has moved, relative to a fixed position, t days after the first measurement was made. Question?
  
• What's the LCM of 6 and 8?
  
• Does this word construction (a meditation on Exodus 3) count as poetry, and if so how would you classify it?
  
• Suppose that #lim_(xrarrc) f(x) = 0# and there exists a constant #K# such that #∣g(x)∣ ≤ K " for all " x nec# in some open interval containing c. Show that# lim_(x→c) (f(x)g(x)) = 0#?
  
• What is 1 divided by 0.2?
  
• How do you solve #sin^2 x - cos^2 x=0# for x in the interval [0,2pi)?
  
• How do you solve 2015 AP Calculus AB Question #1?
  
• How do you solve #2/(x+3)-4/(x^2+2x-3)=1/(1-x)#?
  
• What is the distance between #(0, 0, 8) # and #(9, 2, 0) #?
  
• Question #9e52a
  
• How do you find the number of terms in the following geometric sequence: -409.6, 102.4, -25.6,..., 0.025?
  
• How do you solve #tan^-1(2x)+tan^-1(x)= (3pi)/17#?
  
• What is the Taylor series for #f(x)= cosx# centered on #x= pi/3#?
  
• Question #da791
  
• ?How do you find the sum of the infinite geometric series 0.03, 0.03, 0.003?
  
• Next