Answers created by Hubert
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Question #5e5f5
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Question #7e09b
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How do you use DeMoivre's Theorem to simplify (2(cos(pi/2)+isin(pi/2)))^8?
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If sintheta=sqrt403/22 and pi/2<theta<pi, how do you find tan2theta?
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How do you solve 2sin^2theta=1?
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How do you solve 5sinx+2=sinx for 0<=x<=2pi?
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How do you solve \frac { w } { 3} + \frac { 2} { 5} = \frac { 1} { 15}?
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How do you solve 8( x + 3) - 16> 5x + 8+ 3x?
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How do you solve the system of equations 2x+8y=6 and -5x-20y=-15?
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What is the next four terms in the arithmetic sequence: 12, 16, 20,...?
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How do you differentiate f(x)=(ax+b)/(cx+d)?
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How do you find the exact value of tanx-3cotx=0 in the interval 0<=x<360^@?
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What are the mean and standard deviation of the probability density function given by (p(x))/k=(1-1/(1-x)) for x in [2,10], in terms of k, with k being a constant such that the cumulative density across the range of x is equal to 1?
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What is the standard deviation for {1,3,4,6,8}?
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If the mean of numbers 28, x, 42, 78 and 104 is 62, what is the mean of 48, 62, 98, 124 and x?
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How do you find vertical, horizontal and oblique asymptotes for f(x)=(3x^2 + 2x - 3 )/( x - 1)?
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If f(x) = 9x-4 and g(x) = 7x-9, what ix (f-g)(x)?
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How do you factor 2a^2+3a+1?
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How do you rationalize the denominator and simplify 1/(sqrt5-3)?
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How do you factor -6x^2+6x^3 ?
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What are the variance and standard deviation of a binomial distribution with N=124 and p=0.85?
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Question #16ef7
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A triangle has sides A, B, and C. The angle between sides A and B is (5pi)/12 and the angle between sides B and C is pi/6. If side B has a length of 2, what is the area of the triangle?
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How do you solve Sin^(2)[theta]=cos^(2)[theta]+1?
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How do you solve 2cos^3x + cos^2x = 0 in the interval [0, 2pi]?
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How do you use the rational roots theorem to find all possible zeros of P(x) = 2x^5 + 3x^4 + 2x^2 - 2?
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Let the random variables X and Y have the joint pmf f(x,y)=(x+y)/32, x=1,2, and y=1,2,3,4. What are the means mu_x and mu_y, the variances sigma ""_x^2 and sigma "" _y^2, and the correlation coefficient rho?
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How do you determine if xy=1 is an even or odd function?
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What are the mean and standard deviation of a binomial probability distribution with n=17 and p=18/32 ?
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Question #d548a
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Jonathan's math test scores were 87, 93, 85, 62, and 95. What was his mean score?
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How do you find the limit of (1/(ln x) - 1/(x-1)) as x approaches 1?
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How do use the first derivative test to determine the local extrema f(x) = x³+3x²-9x+15?
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How do you find the extrema for f(x) = x^2 +2x - 4 for [-1,1]?
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How do you find the other five trigonometric functions of x if cosx = 3/5?
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How do you convert 314159 into scientific form?
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How do you find the value for tan^-1[tan(5pi/7)]?
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In triangle ABC, A=31.4, B=53.7, <C=61.3°, how do you find the area?
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How do you determine where the graph of the given function is increasing, decreasing, concave up, and concave down for h(x) = (x^2) / (x^2+1)?
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What is the derivative of (pi)/(x)?
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How do you find the derivative of x^2+1?
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How do you find the derivative of x^(1/2)?
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How do you find the derivative of f(x) = x^2(x-2)^4?
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What is the sum of the infinite geometric series with a_1=42 and r=6/5?
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How do you use the law of sines to solve the triangle given A = 165.1°, B = 81.9°, b = 18.6?
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How do you factor n^2-9n+20?
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How do you simplify i^-33?
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How do you find the critical points for y = 2x^3 + 3x^2 - 12x + 4?
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How do you find the intervals of increasing, decreasing and concavity for f(x) = 2x^3 + 3x^2 - 432x ?
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How do you solve Arctan(x) = pi/4?
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How do you find the solution to the quadratic equation x^2 - 5x - 8 = 0?
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How do I find the sum of the infinite geometric series such that a_1=-5 and r=1/6?
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What is the sum of the infinite geometric series 1 + 1/5 + 1/25 +... ?
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How do you factor 4a^2-28a+48?
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How do you solve 5^(x+2) = 4^(1-x)?
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How do you find all the asymptotes for (2x^3+11x^2+5x-1)/(x^2+6x+5 )?
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How do I find the range of the function y=-2^x+2?
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How do you find the domain of f(x)=(log[x-4])/(log[3])?
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How do I find the partial-fraction decomposition of (s+3)/((s+5)(s^2+4s+5))?