Answers edited by sente

• Back to user's profile
• Next
• 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 is the derivative of #f(x) = (lnx)^(x)#?
  
• Question #5d611
  
• Question #a43bd
  
• What is the frequency of #f(theta)= sin 3 t - cos 21 t #?
  
• A composite geometrical shape is made up of a square, equilateral and right triangles. Calculate the area of hatched triangle?
  
• 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#?
  
• Determine the interval whereby 6x^2 + 44x + 70 ≥ 0?
  
• How do you find all solutions to #x^5+243=0#?
  
• How do you solve #2/(x+3)-4/(x^2+2x-3)=1/(1-x)#?
  
• How do you solve #sin^2 x - cos^2 x=0# for x in the interval [0,2pi)?
  
• 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)?
  
• Question #0f6bd
  
• What is #(-7pi)/8 # radians in degrees?
  
• How do you find the number of terms in the following geometric series: 100 + 99 + 98.01 + ... + 36.97?
  
• What are complex numbers?Thanx.
  
• 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#?
  
• Question #b5ab2
  
• Write the equation of a function with domain and range given, how to do that?
  
• 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#?
  
• What is #lim_(x->0) (x^3+12x^2-5x)/(5x)# ?
  
• How do you solve #log x + log (x-3) = 1#?
  
• What is #int_0^pi (lnx)^2 / x^(1/2)#?
  
• How do you simplify # (x^(1/3) + x^(-1/3))^2#?
  
• Among all pairs of numbers with a sum of 101, how do you find the pairs whose product is maximum?
  
• Find the area of the shaded region (green) knowing the side of square is #s = 25 cm#?
  
• How do you solve 2015 AP Calculus AB Question #1?
  
• How do you perform inversions for #y = x^2 and y = x^4?# Is #(dx)/(dy)# from the inverse #1/((dy)/(dx))?#
  
• How do you simplify #-2/(3-i)#?
  
• Question #da791
  
• In the triangle embedded in the square what is the measure of angle, #theta#?
  
• Does #a_n=1/(n!) # converge?
  
• How do I find the natural log of a fraction?
  
• How do you solve #120=100(1+(.032/12))^(12t)#?
  
• How do you solve #tan^2 x=tan x#?
  
• Question #d2752
  
• How do you simplify # (2+2i)/(1+2i) # and write in a+bi form?
  
• How do you simplify #(sina+tana)/(1+cosa)#?
  
• Question #e07a4
  
• Question #c5432
  
• How do you prove #sec^2 x - cot^2 ( pi/2-x) =1#?
  
• What are the all the solutions between 0 and 2π for #sin2x-1=0#?
  
• How do you graph #g(x)= log_6 x#?
  
• Is there a systematic way to determine the number of numbers between 10 and, say, 50, divisible by their units digits?
  
• What is the product of #2x^2+7x-10# and #x+5# in standard form?
  
• How do you use DeMoivre's Theorem to find #(1+i)^20# in standard form?
  
• Question #a71e9
  
• How do you find the number of terms in the following geometric sequence: -409.6, 102.4, -25.6,..., 0.025?
  
• ?How do you find the sum of the infinite geometric series 0.03, 0.03, 0.003?
  
• How do you show that if #a+b=0#, then the slope of #x/a+y/b+c=0# is #1#?
  
• What is the value of #1/n sum_{k=1}^n e^{k/n}# ?
  
• Is #sqrt33# an irrational number?
  
• How do you convert #(3, -3sqrt3)# to polar form?
  
• How do you express #sqrt(-4/5)# as a product of a real number and i?
  
• What is 0.09 (repeating) as a fraction?
  
• What is 1 divided by 0.2?
  
• 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#?
  
• Solve for #x in RR# the equation #sqrt(x+3-4sqrt(x-1))+sqrt(x+8-6sqrt(x-1))=1# ?
  
• Question #98d02
  
• Is #sqrt(2)^(sqrt(2))# rational ? And #sqrt(2)^(sqrt(2)^sqrt(2))#?. And #sqrt(2)^(sqrt(2)^(sqrt(2)^cdots))#?
  
• A 45-45-90 triangle has a hypotenuse of length 14 units. What is the length of one of the legs?
  
• Question #9c5a0
  
• How do you verify #(cosX+sinX)/(cscX+secX) = (cosX)(sinX)#?
  
• If # n = 1/4#, what is the value of #(2n-5)/n#?
  
• Question #db818
  
• Question #9e52a
  
• 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 is the distance between #(0, 0, 8) # and #(9, 2, 0) #?
  
• Question #2b5bb
  
• 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#?
  
• How do you differentiate #p(y) = y^2sin^2(y)cos(y)# using the product rule?
  
• How to write the first four terms of the Maclaurin series for the function f(x)=(x+1)e^(2x) given that ?
  
• Question #de166
  
• What's the LCM of 6 and 8?
  
• How do you integrate # 1/(1+e^x) # using partial fractions?
  
• Does this word construction (a meditation on Exodus 3) count as poetry, and if so how would you classify it?
  
• 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 simplify # cos (pi - theta)#?
  
• 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?
  
• How do you simplify #((2n)!)/(n!)#?
  
• Question #6d8e6
  
• How do you use the ratio test to test the convergence of the series #∑(2k)!/k^(2k) # from n=1 to infinity?
  
• How do I perform matrix multiplication?
  
• Next