Smth about integration

Integration, in mathematics, technique of finding a function g(x) the derivative of which, Dg(x), is equal to a given function f(x). This is indicated by the integral sign “∫,” as in ∫f(x), usually called the indefinite integral of the function. The symbol dx represents an infinitesimal displacement along x; thus ∫f(x)dx is the summation of the product of f(x) and dx. The definite integral, written with a and b called the limits of integration, is equal to g(b) − g(a), where Dg(x) = f(x).

Old-Fashioned Apple Cookies

Ingredients

1

cup packed brown sugar

1/2

cup butter or margarine, softened

1

egg

1 1/2

cups Gold Medal™ all-purpose flour

1

teaspoon ground nutmeg

1/2

teaspoon salt

1/2

teaspoon baking soda

Steps

• 1

  Heat oven to 375°. Grease cookie sheet with shortening. Beat brown sugar, butter and egg in large bowl with electric mixer on medium speed until light and fluffy. Stir in flour, nutmeg, salt and baking soda. Stir in apple.
• 2

  Drop dough by rounded teaspoonfuls about 2 inches apart onto cookie sheet.
• 3

  Bake 8 to 10 minutes or until light brown. Remove from cookie sheet to wire rack; cool. Store loosely covered.
• 
  
• https://www.bettycrocker.com/recipes/old-fashioned-apple-cookies/40fe1166-55c7-498f-b83f-b0cd224ded44

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