Step 1. Definitions
Step 2. Solution
Proof by induction
Let P(n) be the statement "
Thus P(2) is true.
Inductive step. Let P(k) be true.
We need to proof that
Conclution. By the principle of methematical induction, P(n) is true for all positive integers n.
When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?
How many minutes are there in hours?
Find the answer for power .
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How to write in scientific notation?