Real numbers - math problems

Number of problems found: 94

  • Reciprocal
    reciprocal Calculate the reciprocal numbers for the given real numbers.
  • Exponential equation
    exp Solve exponential equation (in real numbers): 98x-2=9
  • Open intervals
    intervals.svg Open intervals A = (x-2; 2x-1) and B = (3x-4; 4) are given. Find the largest real number for which A ⊂ B applies.
  • Mixing operations with numbers
    numbers_49 Subtract twice the number -23.6 from the difference of the numbers -130 and -40.2.
  • Quadratic equation
    parabola Determine the numbers b, c that the numbers x1 = -1 and x2 = 3 were roots of quadratic equation: ?
  • Imaginary numbers
    Complex_conjugate_picture.svg Find two imaginary numbers whose sum is a real number. How are the two imaginary numbers related? What is its sum?
  • Distance of numbers
    numbers2_17 Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?
  • Biquadratic
    bikvadraticka By introducing a new variable solve biquadratic equation: ?
  • Logarithmic equation
    nat_log_ln Solve equation: log13(7x + 12) = 0
  • Factors
    factors Can the expression ? be factored into rational factors?
  • Root
    sq_root Use law of square roots roots: ?
  • Real estate
    house The residential house has three entrances numbered by odd numbers arithmetic progression. The sum of the two numbers on the corner entrances is 50. Calculate the highest of these three numbers.
  • Cotangent
    sin_cos If the angle α is acute, and cotan α = 1/3. Determine the value of sin α, cos α, tg α.
  • Cube root
    30gon_1 Find cube root of 18
  • Coordinate
    exp_ln Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5x
  • Geometric mean
    geom_mean Calculate the geometric mean of numbers a=15.2 and b=25.6. Determine the mean by construction where a and b are the length of the lines.
  • Events
    items Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try.
  • Trigonometric functions
    trigonom In the right triangle is: ? Find the value of s and c: ? ?
  • Slope
    slope What is the slope of a line with an inclination 6.06 rad?
  • Circle
    circles From the equation of a circle: ? Calculate the coordinates of the center of the circle S[x0, y0] and radius of the circle r.

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