- Write a lambda function for the equation $$ c=f(a,b)=(1-a^2+b^3) e^{-(a^2+b^2)/2}$$.
- Create two arrays- a and b- that range from -3 to 3 in increments of 0.1.
- Make a meshgrid from a and b.
- Evaluate c for the meshgrid
- Make a contour plot of a,b and c.

- Lisa moved to San Diego in 1983. Use the functions in the
**mkigrf**module to do the following:- Calculate the inclination, declination, and strength of the field that year.
- Create a map of the strength of the field in 1983
- include coastlines
- a title
- a color bar

- Make a plot of declination in San Diego (33,-117) over the last 100 years.

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