**Question:**

If , then find the value of .

**Solution:**

We have .

But,

Thus,

but, which equals

that is, .

Thus, .

Hope you are finding it useful,

More later,

Nalin Pithwa

Mathematics demystified

**Question:**

If , then find the value of .

**Solution:**

We have .

But,

Thus,

but, which equals

that is, .

Thus, .

Hope you are finding it useful,

More later,

Nalin Pithwa

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