Solve for u cos(2u)^2-sin(2u)^2=cos(4u)

Solve for u cos(2u)^2-sin(2u)^2=cos(4u)
Move to the left side of the equation by subtracting it from both sides.
Simplify the left side.
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Apply the cosine double-angle identity.
Multiply by .
Subtract from .
Since , the equation will always be true for any value of .
All real numbers
The result can be shown in multiple forms.
All real numbers
Interval Notation:
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Name

Name one billion two hundred ten million four hundred fifty-eight thousand fifty-nine

Interesting facts

  • 1210458059 has 4 divisors, whose sum is 1212185520
  • The reverse of 1210458059 is 9508540121
  • Previous prime number is 701

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 35
  • Digital Root 8

Name

Name one billion eight hundred twenty-four million two hundred forty-three thousand seven hundred sixty-three

Interesting facts

  • 1824243763 has 8 divisors, whose sum is 1883730816
  • The reverse of 1824243763 is 3673424281
  • Previous prime number is 3581

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 40
  • Digital Root 4

Name

Name one billion seven hundred sixty-seven million nine hundred eighty-two thousand one hundred ninety-seven

Interesting facts

  • 1767982197 has 8 divisors, whose sum is 2414805120
  • The reverse of 1767982197 is 7912897671
  • Previous prime number is 41

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 57
  • Digital Root 3