MJP
• Member for 2 years, 3 months
• Last seen more than 1 year ago

### Questions (37)

 3 Composition of multivariate functions. 2 Show that no entire function $f\big(\frac{1}{n}\big)= \frac{n}{2n-1}$ exists using the identity theorem. 2 Solve $\int_{|z|=2}\frac{e^{3z}}{(z-1)^3}dz$ using residue. 2 Degree of pole of $\frac{1}{\cosh(z)}$ 2 Order of pole of $f(z) = \frac{\cos z-1}{z^3}$.

### Reputation (419)

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 1 Convert First-order Linear System to Second-order ODE. 0 Order of pole of $f(z) = \frac{\cos z-1}{z^3}$.

### Tags (54)

 1 ordinary-differential-equations × 2 0 multivariable-calculus × 8 1 systems-of-equations × 2 0 calculus × 6 1 homogeneous-equation 0 derivatives × 5 0 real-analysis × 11 0 linear-algebra × 5 0 complex-analysis × 9 0 singularity × 4

### Bookmarks (1)

 0 Why is this true? $\int \frac{du}{\tan u \cos^2 u} = \int \frac{d(\tan u)}{\tan u}$

### Accounts (10)

 Mathematics 419 rep 22 silver badges99 bronze badges Cross Validated 151 rep 55 bronze badges Stack Overflow 131 rep 44 bronze badges Physics 103 rep 22 bronze badges Meta Stack Exchange 101 rep