1.1 problem 2.2 (a)

1.1.1 Solving as quadrature ode
1.1.2 Maple step by step solution

Internal problem ID [13242]
Internal file name [OUTPUT/12414_Wednesday_February_14_2024_02_06_03_AM_49185375/index.tex]

Book: Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section: Chapter 2. Integration and differential equations. Additional exercises. page 32
Problem number: 2.2 (a).
ODE order: 1.
ODE degree: 1.

The type(s) of ODE detected by this program : "quadrature"

Maple gives the following as the ode type

[_quadrature]

\[ \boxed {y^{\prime }=3-\sin \left (x \right )} \]

1.1.1 Solving as quadrature ode

Integrating both sides gives \begin {align*} y &= \int { 3-\sin \left (x \right )\,\mathop {\mathrm {d}x}}\\ &= 3 x +\cos \left (x \right )+c_{1} \end {align*}

Summary

The solution(s) found are the following \begin{align*} \tag{1} y &= 3 x +\cos \left (x \right )+c_{1} \\ \end{align*}

Figure 1: Slope field plot

Verification of solutions

\[ y = 3 x +\cos \left (x \right )+c_{1} \] Verified OK.

1.1.2 Maple step by step solution

\[ \begin {array}{lll} & {} & \textrm {Let's solve}\hspace {3pt} \\ {} & {} & y^{\prime }=3-\sin \left (x \right ) \\ \bullet & {} & \textrm {Highest derivative means the order of the ODE is}\hspace {3pt} 1 \\ {} & {} & y^{\prime } \\ \bullet & {} & \textrm {Integrate both sides with respect to}\hspace {3pt} x \\ {} & {} & \int y^{\prime }d x =\int \left (3-\sin \left (x \right )\right )d x +c_{1} \\ \bullet & {} & \textrm {Evaluate integral}\hspace {3pt} \\ {} & {} & y=3 x +\cos \left (x \right )+c_{1} \\ \bullet & {} & \textrm {Solve for}\hspace {3pt} y \\ {} & {} & y=3 x +\cos \left (x \right )+c_{1} \end {array} \]

Maple trace

`Methods for first order ODEs: 
--- Trying classification methods --- 
trying a quadrature 
<- quadrature successful`
 

Solution by Maple

Time used: 0.0 (sec). Leaf size: 11

dsolve(diff(y(x),x)=3-sin(x),y(x), singsol=all)
 

\[ y \left (x \right ) = \cos \left (x \right )+3 x +c_{1} \]

Solution by Mathematica

Time used: 0.018 (sec). Leaf size: 13

DSolve[y'[x]==3-Sin[x],y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to 3 x+\cos (x)+c_1 \]