Answers edited by sente

• Back to user's profile
• Next
• How do you verify #(cosX+sinX)/(cscX+secX) = (cosX)(sinX)#?
  
• A composite geometrical shape is made up of a square, equilateral and right triangles. Calculate the area of hatched triangle?
  
• How do you solve #tan^2 x=tan x#?
  
• A 45-45-90 triangle has a hypotenuse of length 14 units. What is the length of one of the legs?
  
• 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#?
  
• What is the Taylor series for #f(x)= cosx# centered on #x= pi/3#?
  
• How do I perform matrix multiplication?
  
• What is #lim_(x->0) (x^3+12x^2-5x)/(5x)# ?
  
• Question #de166
  
• How do you express #sqrt(-4/5)# as a product of a real number and i?
  
• Question #5d611
  
• Question #b5ab2
  
• Does this word construction (a meditation on Exodus 3) count as poetry, and if so how would you classify it?
  
• How do I find the natural log of a fraction?
  
• ?How do you find the sum of the infinite geometric series 0.03, 0.03, 0.003?
  
• 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# ?
  
• Determine the interval whereby 6x^2 + 44x + 70 ≥ 0?
  
• How do you differentiate #p(y) = y^2sin^2(y)cos(y)# using the product rule?
  
• How do you simplify # cos (pi - theta)#?
  
• Question #9e52a
  
• How do you integrate # 1/(1+e^x) # using partial fractions?
  
• What is the frequency of #f(theta)= sin 3 t - cos 21 t #?
  
• Among all pairs of numbers with a sum of 101, how do you find the pairs whose product is maximum?
  
• Is #sqrt33# an irrational number?
  
• 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 #sin^2 x - cos^2 x=0# for x in the interval [0,2pi)?
  
• Question #0f6bd
  
• 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?
  
• If # n = 1/4#, what is the value of #(2n-5)/n#?
  
• Question #c5432
  
• Write the equation of a function with domain and range given, how to do that?
  
• Question #6d8e6
  
• How do you show that if #a+b=0#, then the slope of #x/a+y/b+c=0# is #1#?
  
• How do you solve 2015 AP Calculus AB Question #1?
  
• How do you find all solutions to #x^5+243=0#?
  
• The center of a circle is at (0,0) and its radius is 5. Does the point (5,-2) lie on the circle?
  
• 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 to write the first four terms of the Maclaurin series for the function f(x)=(x+1)e^(2x) given that ?
  
• What is the value of #1/n sum_{k=1}^n e^{k/n}# ?
  
• What is #(-7pi)/8 # radians in degrees?
  
• How do you convert #(3, -3sqrt3)# to polar form?
  
• How do you perform inversions for #y = x^2 and y = x^4?# Is #(dx)/(dy)# from the inverse #1/((dy)/(dx))?#
  
• What is the distance between #(0, 0, 8) # and #(9, 2, 0) #?
  
• How do you solve #log x + log (x-3) = 1#?
  
• How do I graph the ellipse with the equation #x^2+4y^2-4x+8y-60=0#?
  
• How do you simplify #-2/(3-i)#?
  
• Is there a systematic way to determine the number of numbers between 10 and, say, 50, divisible by their units digits?
  
• What is #int_0^pi (lnx)^2 / x^(1/2)#?
  
• What's the LCM of 6 and 8?
  
• Question #d2752
  
• What is 1 divided by 0.2?
  
• Question #9c5a0
  
• What are complex numbers?Thanx.
  
• Solve for #x in RR# the equation #sqrt(x+3-4sqrt(x-1))+sqrt(x+8-6sqrt(x-1))=1# ?
  
• 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#?
  
• Does #a_n=1/(n!) # converge?
  
• How do you use the ratio test to test the convergence of the series #∑(2k)!/k^(2k) # from n=1 to infinity?
  
• How do you prove #sec^2 x - cot^2 ( pi/2-x) =1#?
  
• 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 simplify # (x^(1/3) + x^(-1/3))^2#?
  
• Question #e07a4
  
• What is the derivative of #f(x) = (lnx)^(x)#?
  
• How do you use DeMoivre's Theorem to find #(1+i)^20# in standard form?
  
• Question #da791
  
• 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 product of #2x^2+7x-10# and #x+5# in standard form?
  
• How do you graph #g(x)= log_6 x#?
  
• How do you simplify #((2n)!)/(n!)#?
  
• How do you solve #120=100(1+(.032/12))^(12t)#?
  
• Question #2b5bb
  
• Find the area of the shaded region (green) knowing the side of square is #s = 25 cm#?
  
• How do you solve #2/(x+3)-4/(x^2+2x-3)=1/(1-x)#?
  
• 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 #1/3# of #18#?
  
• Question #a43bd
  
• What are the all the solutions between 0 and 2π for #sin2x-1=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)
  
• Question #a71e9
  
• How do you simplify # (2+2i)/(1+2i) # and write in a+bi form?
  
• Question #db818
  
• How do you solve #tan^-1(2x)+tan^-1(x)= (3pi)/17#?
  
• What is 0.09 (repeating) as a fraction?
  
• Is #sqrt(2)^(sqrt(2))# rational ? And #sqrt(2)^(sqrt(2)^sqrt(2))#?. And #sqrt(2)^(sqrt(2)^(sqrt(2)^cdots))#?
  
• Question #98d02
  
• How do you find the number of terms in the following geometric series: 100 + 99 + 98.01 + ... + 36.97?
  
• Next