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Determining the period of $\sin 2x +\sin\frac{x}{2}$ without using the LCM of periods

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#analysis #functions #trigonometry #periodic-functions
99
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Existence of periodic solution of a differential equation

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#real-analysis #ordinary-differential-equations #periodic-functions
109
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Finding the function $f(x)$ through the given set of conditions

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#functional-analysis #functions #periodic-functions
50
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Periodic and odd function

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#algebra-precalculus #functions #functional-equations #periodic-functions
252
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Period of trig functions

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#trigonometry #power-series #periodic-functions
839
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How to find fundamental period of the sum of two periodic functions

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#algebra-precalculus #functions #periodic-functions
148
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If $c\in\mathbb R,$ then prove that $\sin(x)+\sin(cx)$ is periodic iff $c\in\mathbb Q.$

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#periodic-functions
243
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Name for the center amplitude of a sine wave

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#terminology #signal-processing #periodic-functions
184
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Prove that $0$ is the only $2\pi$-periodic solution of $\ddot{x}+3x+x^3=0$

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#ordinary-differential-equations #periodic-functions
56
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Sine Parametric function exercise

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#algebra-precalculus #trigonometry #inequality #optimization #periodic-functions
81
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If a function $f$ is $L$-periodic then $f'$ has $2$ zeros in $[0,L)$?

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#real-analysis #derivatives #periodic-functions
38
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Periodic solution

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#ordinary-differential-equations #dynamical-systems #periodic-functions
50
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Finding the solutions for $\sin x = \sqrt x - 5$

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#systems-of-equations #periodic-functions
98
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If $(x_n)_{n=1}^{\infty}$ is periodic then $(x_{f(n)})_{n=1}^{\infty}$ is periodic

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#calculus #modular-arithmetic #periodic-functions
115
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If a homogeneous linear equation has a periodic solution, then the non-homogeneous equation also has

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#real-analysis #calculus #ordinary-differential-equations #analysis #periodic-functions

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