Free online scientific calculator for solving advanced problems in Physics, Mathematics, and Engineering with features like plots, unit converter, equation solver, and calculation history.
Jul 28, 2015 · d/dx (2^x) = 2^x * ln2 In order to be able to calculate the derivative of 2^x, you're going to need to use two things the fact that d/dx(e^x) = e^x the chain rule The idea here is that you can use the fact that you know what the derivative of e^x is to try and determine what the derivative of another constant raised to the power of x, in this case equal to 2, is. To do that, …
Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History.
Sep 17, 2016 · This is an example of the square of a difference, (a − b)2 = a2 −2ab + b2, where a = x and b = 2. Substitute your values into the equation. (x −2)2 = x2 − 2(x)(2) +22 Simplify. (x −2)2 = x2 − 4x + 4
Jul 17, 2015 · When you consider the order of the matrices involved in a multiplication you look at the digits at the extremes to "see" the order of the result. In this case (red digits): 2 × 2 and 2 × 1 So the result will be a 2 ×1. The internal ones 2 and 2 tell you if the multiplication is possible (when they are equal) or not (when they are different).
May 8, 2016 · To convert to polar form, substitute: {x = rcosθ y = rsinθ then simplify: So: x2 +y2 = x becomes: (rcosθ)2 + (rsinθ)2 = rcosθ The left hand side simplifies as follows: (rcosθ)2 + (rsinθ)2 = r2cos2θ +r2sin2θ = r2(cos2θ +sin2θ) = r2 So: r2 = rcosθ You might be tempted to simplify this by dividing both sides by r to get: r = cosθ but that loses the solution r = 0, so it is probably ...
Sep 13, 2016 · cos x Use trig identity: cos 2a = 2cos^2 a - 1 We get: 2cos^2 (x/2) - 1 = cos x
How do you use a double-angle formula to rewrite the expression #3 − 6 sin2 x#? How do you find sin 2x, cos 2x, and tan 2x from the given information: #tan x=-6/5# and x is in the second quadrant? How do you use double angle formulas to calculate cos 2x and sin 2x without finding x if #cos x = 3/5# and x is in the first quadrant?
Sep 8, 2014 · Answer 2sin (x)cos (x) Explanation You would use the chain rule to solve this. To do that, you'll have to determine what the "outer" function is and what the "inner" function composed in the outer function is. In this case, sin (x) is the inner function that is …
Dec 4, 2015 · x= \pi + 2k\pi x = \pi/3 + 2k\pi x= -pi\/3 + 2k\pi Since sec (x)=1/cos (x), the expression becomes 1/cos^2 (x) - 1/cos (x) = 2 Assuming cos (x)\ne 0, we can multiply everything by cos^2 (x): 1-cos (x) = 2cos^2 (x). Rearrange: 2cos^2 (x)+cos (x)-1=0. Set t=cos (x): 2t^2+t-1=0 Solve as usual with the discriminant formula: t=-1, t=1/2 Convert the solutions: cos (x)=-1 \iff …
